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1.
When a person cant stop fucking
Dude- My ole lady is so pissed off at me right now.

Other Dude-Why?

Dude-She says Iam stuck on Auto Fuck wanting to screw every day.
by troubledemon March 28, 2010
16 16
 
2.
when your dick is so numb from fucking all night your pelvis is thrusting in a repetitive motion from habit
Jenny: OOOOOh yeeeaaah! uh! harder!
Bob: Sorry honey, i forgot you were there, im on autofuck right now.
by trillestchic May 28, 2008
7 10