A medical condition in which tetanus results in prolonged contraction of skeletal muscle fibers ... in your balls. Painful muscle spasms may preclude the use of your balls.
Jra: Damn, that dude was just fell down off that fence.

Mkr: I hope he didn't get scratched by a rusty nail. He'll need a tetanus shot so he doesn't get lockballs.

Jra: Yeah, no one should ever get lockballs.
by Lab Narwhal March 20, 2012
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