Mfw

[Sarah]

Abbreviation for my face when

[Mark Zuckerberg]

Stands for My Face When. Some people will type a strange emoticon after or just leave it as mfw.

[Becky]

An acronym for Mother fucker why. Typically used when your teammates shoot you in CS:GO. Looking at you, Tom.

[Britney]

Mother fuckin what

[Becky]

My fucking word, a play on my word, an exclamation typically associated with the 19th and late 20th century upper class.

[PussyCat]

Acronym for : Mother fucking Win

[Jessica]

More fucking worse

[PussyCat]

My feet wiggle.
Used to describe situations where you feet wiggle.

[Little_Girl]

em-eff-double-yew
Mother Fucking Win. The act of winning to a motherfucken [new level]. (See [FTW], [for the win])