Cabbage Walk

Cabbage walk is when two or more people go to a certain area only to leave right after arriving at their destination.

It also is a danish tradition, called Kohlfahrt ("cabbage walk") is when peopel arrange a walk through the countryside to a village pub, usually in mid-winter.

Dude 1: Hey bro, lets go to the canteen and get some food!
Dude 2: Yea sure thing bro lets go!
*dude 1 and 2 arrive at the canteen, and they see it full*
Dude 1: Yo bro this place is filled lets go back
Dude 2: Yea bro we just did a cabbage walk