Definitions by powderhound

chocolate undercarriage

The covering of shit on the bottom of a man's balls, when a girl shits while having sex.

She was so excited to have sex with him, she forgot to use the bathroom, and gave him a chocolate undercarriage.

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the occurunce of an unwanted erection during a ride in a car, truck boat, airplane, etc. usually occurs on long trips.

dude, i hope she doesnt see my road bone. I've had it since we left town and i cant get rid of it!

road bone by powderhound February 27, 2010

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