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1.
to have sex an excessive amount
the mongols spent a lot of time in the korean peninsula overfucking their seed into the local women in the time of genghis khan
-uberscheisse
by xeren November 27, 2009
 
2.
When one reacts too strongly to sex creating an awkward situation.
"Whoa honey this is average sex, don't overfuck it."
by Sword Iris November 18, 2011
 
3.
When someone uses FML ( in reference to fmylife.com) way to often and unnecessarily.
Example 1:
Jennifer: I can't fall asleep! FML.
Fred: Wow don't over-fuck it!

Example 2:
Josh: She says FML after EVERYTHING!
Jake: Everyone is over-fucking it these days!!!!
by words12345678 May 11, 2009