Throttle Thumb

When your thumb gets sore from holding down the throttle on a quad.
(after a whole afternoon of riding on the quad)
"Damn, I got throttle thumb!"
by Joegus the Rogue March 29, 2010
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Thumb Throttle

A sex move where you repeatedly poke your thumb in a girl's bunghole, The same way you would press the throttle to rev a four-wheeler.
My girl loves the thumb throttle when I'm doing her doggy style! VROOM VROOM!
by Bacardi Pete June 02, 2024
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