Fwm

[Tina]

fuck with me.
Its like saying talk to me or get at me.

[Becky]

Abbreviation for Fuck, or Fucking, With Me

See also: FWY or FWU

[Britney]

Disbelief, thinking or knowing someone is lying to you. You better not be lying.

[Sonia]

Friend(s) With Money/Mugga/Mula

[Mark Zuckerberg]

Flying while Muslim similar to DWB -driving while black

[Rihanna]

Stands for Fuck Why Me.(fuckwhyme.com) It is also a site where people share funny embarrassing stories ending with FWM.

[Becky]

Fuck Wolfs Mum

[Tanya Shivari]

Filled With Mirth
mirth/mərTH/
Noun:
Amusement, esp. as expressed in laughter.
To replace the short hand LOL and haha