To jam your thumb in the anus and make her scream daddy till she cums
I gave her the thumb in butt broski.
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To hork or lodge the erect thumb straight into the anus of a woman. "also know as lil butt thumb"
Sam M like to butt thumb anna chew
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Butt thumbing is much like butt fingering, except that the thumb is used. It tends to be more intense because of the dexteral advantage of the thumb over fingers for two main reasons:
1. The thumb does not have other fingers getting in its way
2. It is much sassier
starting now, every chick i bone is gonna experience the butt thumb too
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When you're fucking a chick minding your own business and a bitch sticks her thumb up your ass, so you slap the shit out of her and throw her nasty ass to the curb.
"That girl's hot but she tried to give me butt thumb,and now I might be gay"
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