What is Riding Bitch?
1.
Sitting in-between the driver and the passenger in a vehicle or sitting behind the driver on a motorcycle.
2.
A person riding between the driver and passenger in a pickup truck. Generally an uncomfortable position in the cab, hence the name.
"Damn, I'm not riding bitch again."
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3.
The person forced to sit in the middle of the back seat or in between the two front seats in a two seater in a car. Usually the smallest person or only female in the group will have to ride 'bitch', so that the guys don't touch each other (irrational male homophobia)
Jim: Whos riding bitch? it'd better be Jill- 'cos i ain't sitting next to that
stupid fuck Jack again.
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4.
the passenger (usually female) on the back of a motorcycle.
Do I have to ride bitch again?