Ass Crack Lane 

When you can see someone's butt crack and look directly into it.

DOOD1: Man look over there

DOOD2: Man that is Gross

DOOD3: What happened?

DOOD2: I just went down ass crack lane :|

Ass Crack Lane by MRUnpossible June 7, 2009

Ass Crack Lane 

When someones pants are falling down and their ass crack is visable, they are then on or traveling down ass crack lane.

Guy 1: dude you can see that chicks crack!
Guy 2: Shes on a walk down ass crack lane!

Ass Crack Lane by LMFMC FUCKER June 7, 2009