an expression used to indicate the desire to have sexual intercourse with a member of the human race.

Referring to having sex with a female.

Comes from the party term, 'to tap a keg'.. where one inserts a tap into a keg and drinks what comes out. But the user is instead tapping an ass..

Wanting to engage in sexual activity's with a cute Female !!

To have, in the past, had sexual intercourse with a particular female.

do it in the butt

1. to engage in sexual relations with another. comes from the root: tappimus datus assimus
refers to tapping a keg

To have sexual intercourse with a female, gennerally in the 'doggystlye' position.