Exclamation marking profound emotion. Commonly applied to situations involving:

1) Exasperation or stress
2) Near-orgasmic satisfaction with life
1) "Fucking orgo test tomorrow and I haven't even begun memorizing my hundred characters for Intensive Introduction to Chinese.... Holy shit, AND a paper on goddamned T.S. Elliot. Fuck my tits, Matt. Fuck my tits."

2) "OMG I just had Chipotle after three months of abstinence. Fuck my tits fuck my tits fuck my tits."
by emoysha October 14, 2009
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A catch phrase used by Louis C.K. when talking to his wife, Kim. From The series "Lucky Louie"
It means he wants to put his weener in her.
"I'm gonna fuck your tits off" (pushes Kim into the closet and shuts the door)
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an expression, usually loud with a great amount of passion, that can represent joy, anger and anything in between
"Fucking tits! She wants to bang me!"

"I just got an F on my final...fucking tits!"
by Frederikson c304 January 30, 2006
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