Tricycle

[Sarah]

To have a threesome, two girls and a guy. First heard on How I Met Your Mother.

[Sarah]

Someone who's third wheel game is strong

[Sarah]

A threesome, sexual in nature or otherwise.

[Sarah]

Overachieving bike, or a bike with permanent training wheels.

[Sarah]

The spot between your legs, also know as shaft and glans.

[Sarah]

A type of vehicle with three wheels, Tricycles can either be powered by an engine (motortrike) or by pedals. A tricycle can have two wheels at the back and one at the front (frog) or two wheels at the front and one at the back (tadpole).
Pedal tricycles can either be upright much like a common [bicycle] or can be [recumbent]. Most upright tricycles tend to have have two wheels at the back (frog) where as the recumbent variety more commonly have two wheels at the front (tadpole).

[Sarah]

A boygirl/ladyman etc. and has a variation between two penises, two vaginas, or one penis and a vagina.

[Sarah]

When one girl is sucking on a guy's left nut, a second girl is sucking his right nut and a third girl is sucking on the guy's cock.

[Jessica]

A vehicle similar to a bicycle, but having three wheels, two at the back and one at the front.

[Dianne]

Version of the term [trisexual]/[trisexuality].

To be sexually attracted to/involved with men, women, and animals (not necessarily all at one time

[Sarah]

a small vehicle like a bicycle with two wheels at the back and one at the front, used especially by young children