tailgazing
Checking out a chicks ass, specifically while on an escalator or similar situation (so you are 'following' it). Also, can include the act of positioning yourself just behind a chick on the escalator (following close).
Johnny was tailgazing all the way up the escalator at Wheaton, did you see the chick standing in front of him?
Tailgazer
To gaze upon a fine lady's beautiful posterior. The inability to look away from a fine piece of ass.
I was walking to the train today and the tailgazing was fantastic! It's great to be a tailgazer on a day like today.
I hate going out with my boyfriend he is such a tailgazer!
I can't believe she is marrying him, doesn't she know how much of a tailgazer he is?
I hate going out with my boyfriend he is such a tailgazer!
I can't believe she is marrying him, doesn't she know how much of a tailgazer he is?