2 definitions by J. M. Fuhqueny

To get knocked out so hard that your ears flop like Dumbo's.
Holy shit! Tony Ferguson just got Dumbo'd by Michael Chandler!
by J. M. Fuhqueny May 10, 2022
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When one is bored and lonely so one masturbates with a thumb wedged knuckle-deep into one's own anus.
I told them I fell asleep early because I didn't want them to know I spent all night Thumb-Bummin.
by J. M. Fuhqueny November 5, 2023
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