to stick one's penis into; fuck

Having sex with a woman.

a person who is crazy or insane

When you are attracted to someone and you want to fw/date them so you ask them out and tap in

When a woman is so unsatisfied with a man's sexual performance, she taps him on the shoulder, indicating that she's tired and just wants to go to bed.

Popularized by Seinfeld.

An object which is turned to allow water to pass through it

A great form of dance in which the dancer wears shoes with metal plates on the bottom that produce sound when they hit hard floor. Tap is all about sound and rhythm!

Oh, and there's the sexual definition too, but that has clearly been overdone. :)