2 definitions by MechaMonkey

Top Definition
The tailgunner on a WWII bomber.
Pilot: We have a bogey on our six!
Co-Pilot: Don't worry, the assgunner's got 'em.
by MechaMonkey September 28, 2004
the proportion of a person's rump to the rest of their body.
Wow, that girl must have an ass fraction of at least a fifth!
by MechaMonkey September 28, 2004
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