White knight

[Becky]

A person (usually a male) who sees the typical maiden in distress, and believes that he can help her. A male version of the mother figure that some girls become.

[Justin Bieber]

According to the MISC on the BodyBuilding website: A white knight is defined as a male that treats woman as goddesses and does nothing but shower then in compliments on how wonderful and beautiful and special they are. Maybe be used as a noun or a verb.

[Justin Bieber]

A gaming term used to describe a male gamer who, in a desperate attempt to get himself laid, will attempt to woo or impress any female gamer he comes across online by being overly defensive of her and giving her special attention, such as playing as a healing class and only healing her.

[PussyCat]

Got some girls being butt-hurt? Got some white teenaged males with nothing to do?
Introducing white knighting! A perfectly respectable act of suddenly becoming chivalric and nice by the mere presence of e-boob.

[PussyCat]

A man who stands up for a womens right to be an absolute equal, but then steps up like a white knight to rescue her any time that equality becomes a burden.

A man who Promotes gender equality but practices special privilege for women.

[Tina]

On an [internet forum], a person who defends a member who is clearly wrong, usually with the hopes of gaining brownie points with said member. Often seen as negative behavior.
Similar to playing [Devils Advocate], but specific to internet forums.

[Britney]

White Knight.
A person, generally a man, who is seen giving all their attention to one or many particular females online.
The most common places that White Knights dwell is on 4chans random board and various online games towards the RPG persuasion. However, White Knights are found everywhere in the online world.
This self motivated acts of chivalry is not geared toward just saving the hambeast maidens, but also White Knights have been noted to follow the rules adamantly in hopes of either becoming a moderator/admin or just flat out want to spoil the general online populations fun of bending the rules.
White Knights are not fun, but instead stuffy, boring, and an unusual hatred towards their fellow man for being selfish, crude and misogynists, in other words: All the fun things in life.

[Tanya Shivari]

Someone who sticks up for a friend or person in hopes of getting something out of it other then trying to help them.

Mostly males who trys to win over the girl theyre protecting, yet making the girl seem bad.

[Little_Girl]

A guy that sells out his own male gender to earn some extra brownie points with the ladies

Or a guy that will pretty much do everything a girl tells them..

[Zipporah Schumaker]

On an [internet forum], a person who defends a member who is clearly wrong, usually with the hopes of gaining brownie points with said member. Often seen as negative behavior.
Similar to playing [Devils Advocate], but specific to internet forums.

[Dave Paprocki]

On an [internet forum], a person who defends a member who is clearly wrong, usually with the hopes of gaining brownie points with said member. Often seen as negative behavior.
Similar to playing [Devils Advocate], but specific to internet forums.

[Oralee]

A [white knight] is a man who will [go to great lengths] to defend women, whether they are attacked physically, verbally, or sexually. In fact, it does not matter if the woman is attacked at all. They will ditch their own best friends, hit people, or say things they never would elsewhere, just to protect that woman. White knights come in all shapes and sizes.
White knights are generally men with seriously low self esteem issues. They are also [sexually depraved], and have never had a girlfriend or any female attention for that matter. They use their white knightry as a last ditch attempt to get laid and/or prove their worth to society. Usually socially awkward people who tend to live in fantasy worlds, and will brag about their heroic deeds and manliness in every conversation with people. Tend to identify as women supporters or feminists, but could not be further from the truth as all they do is reinforce the idea that women are weak.
Hated by true feminists and mens rights activists (MRAs) alike.

[Dianne]

More commonly referred to as [a cuck], a [white knight] is a [pathetic beta male] who will attempt to defend women at the expense of their own dignity.

[Couch Potatoe]

a type of cockblocker
(noun, verb: White Knight. adjective: White Knightey.)
a [male acquaintance] of a woman who, usually motivated by jealousy, attempts to cockblock the woman by defending her (implicitly, her chastity) from another man.
Though the White Knight typically attempts to persuade the other man that the woman is not interested, the White Knight usually is motivated to act in the first place only because he senses that the woman is attracted to the other man.
Amongst [cockblockers], the White Knight is a relatively impotent type, because (i) the woman usually knows intuitively that the White Knight wants her and is motivated by his jealously, and (ii) White Knights almost always have low to moderate social skills/influence (which is why they are White Knights, because they do not get laid themselves), so the woman also knows that the [White Knights] irritation is not likely to have negative social consequences for her. However, the White Knights attempts are sometimes successful, often only because he unwittingly embodies the womans fear of [Slut Shaming] (being judged), a very potent cockblocking force.
Typically, a man who behaves as a White Knight is in a pathetic state of mind. He feels for some reason that he cannot get laid, so reduces himself to trolling other men, especially men who happen to be [hitting it off] with women whom the White Knight has a history of fantasizing for.