Biplane

[PussyCat]

A synonym for the [double popped collar]. This is when an individual wears two polo shirts, each with their collar folded up. These polo shirts are typically pastel coloured, although harsher colours are sometimes worn.
Wearing the biplane is a sufficient condition for being a [douchebag].

[Lanell]

To perform auto fellatio on oneself with your legs spread as far as possible, you reach out and grab your feet so that it looks like the wings of an old bi-plane.

[Kai]

A sexual act that requires 2 men and 1 female. One [spins] a [figit spinner] on his penis while one stands behind the one with both of their arms extended. Both men make plane noises while running until they reach her [vigina]

[Zipporah Schumaker]

An early type of aircraft with two pairs of wings, one above the other.

[PussyCat]

an old type of aircraft with two sets of wings, one above the other