2 definition by ESBN

Top Definition
A sex move when the woman sticks her thumb into a man's meatus (the lip of your penis) and rubs it until you cum.
Josh got to thum Victor the other day.
by ESBN January 06, 2020

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A sex move when the woman sticks her thumb into the meatus (the lip of your dick) and rubs it until you cum.
Josh got to thum Victor the other day.
by ESBN January 06, 2020

Mug icon
Buy a Thum mug!