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1.
When you are fucking a girl doggystyle and she is giving your boy head at the same time. Hence you are pushing from the back, and she is pulling and sucking from the front.
Yo me and scottie brought this chick home from the club last night and ran the push and pull on that ho!
by Dirt Mcgert June 11, 2008
 
2.
to jerk off while taking a shit. hence push and pull
man, grosss.....who was push and pulling in the bathroom
by Chris the Great March 07, 2004