when you're holding someone's hand, you rub your thumb against their hand. it feels nice and gives a them a comforting feeling.
Friend: "Did you do the thumb thing???"
Other friend: "Yeah, I did, I think they really liked it. They must've fallen in love with me because of it!"
Other friend: "Yeah, I did, I think they really liked it. They must've fallen in love with me because of it!"
by ValentineeeeeeG. April 7, 2021
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