1. The Buitenhuis occurs when a group of male friends go to the bar (or a party) together, and at the first scent of a female, a friend (the offender) ditches everyone else for the rest of the night.
2. A repeat offender of the Buitenhuis can also be called a "Buitenhuis"
Friend 2: He pulled a Buitenhuis as soon as we walked in the door.
2. Friend 1: Tom ditches all the time, we should just call him Buitenhuis