to think about fucking a woman while looking at her

A polite term for shoving a lubricated probe into the Earth's hole to release gas.

To stare at someone in a creepy, sexual way, usually for several minutes without blinking or stopping when the person being eye-humped realizes he/she is being mentally undressed (and doesn't even want to think what else) by the eye-humper. If done right, very unnerving.