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1.
The act of playing FIFA.
What're you up to?

Just fifaing.
by forjamie August 24, 2009
 
2.
The act of having sex whilst playing on FIFA.

Also 'FIFAed'
Good night?
Yeah, had a go at FIFAing!
Oh right, what's that?
Having sex whilst playing FIFA it's amazing.
Did you win?
Nah, couldn't hack it.
by LAD24 February 06, 2011
 
3.
The act of having casual sex
Hey Luke, would you like to go fifa-ing with me?
Sure, lets have casual sex.

Dude, they were fifia-ing all night long.
Sweeeet dawg!
by broskinator December 10, 2010
 
4.
The act of playing fifa (the football game on ps3, pc, xbox, wii etc)

Dude: Hey man what are you doing??

Guy: Fifa-ing bro.

Dude: Ahh jelly.
by marzipoo September 28, 2012