Riding the tricycle

A term for having a three way with one man, and two women. This term is from the popular television show "How I Met Your Mother".

Example:

Guy 1: Bro I had a three way last night.

Guy 2: congratulations on riding the tricycle.

Example 2:

Girl: I never thought I would ride the tricycle.

Slang term for a threesome. More specifically, one guy and two girls.