Also known as a steering wheel spinner, a "wrist breaker" is a device made to attach to a vehicle's steering wheel to give the operator one point of contact with the wheel so it can be rapidly turned. The wrist breaker earned it's slang name through urban myths about people using them in their cars having broke their write when their car's steering violently jerked while going over extreme bumps.
"damn son, that's a dope wrist breaker on your whip."
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