Top definition
A girls back passage (or man's, not judging)
to 'Take a trip down ~': To perform anal sex on sb.
guy 1: you fuck that bird then?
guy 2: yeah mate, took a lil trip down the Kit Kat Highway
guy 1: nice one son!
by Jimzilla April 28, 2006
Get the mug
Get a Kit Kat Highway mug for your buddy Paul.