Ad hominem

[Donald Trump]

An attack upon an opponent in order to discredit their arguement or opinion. Ad hominems are used by immature and/or unintelligent people because they are unable to counter their opponent using logic and intelligence.

[Little_Girl]

Whilst in an arguement, to avoid the point (thus a cop-out) and to insult the person arguing. Often because the person who results to the insults has no logical/intelligent point, thus they break down to immaturity.

[Rihanna]

Originally from the Latin meaning - argument to the man, argument against the man.
Now meaning Argument against what a person has posted via the net and brought about by Psychological projection as to the person hidden behind the Computer Screen and On-line Identity.
Can also be seen as an idiotic lack of appreciation of Netiquette and also gross self absorption by the reader/responder.

[Little_Girl]

An ad hominem refers to someone attacking a person verbally rather than attacking their argument. It literally means argument against the man and is the most common [logical fallacy].