A fork of Rural Dictionary
Simultaneously masturbating your male partner with one hand, and inserting fingers from another hand in his arse.
Sarah asked Dave if he wanted to try a new position: the bicycle pump. he said "hell yea!"
being defined as having a woman lay down on her back then proceed to take another woman have her rub her vagina and pump her legs as if riding a bicycle
bicycle pump can be defined as Meera laid on her back and spread legs open as Milani proceeded to rub her vagina as Meera moved her legs in a circular motion as if riding a bike, "yeah pump me"