Thumb Plug

When a male can not reach climax so he inserts thumb into his own ass to get himself there.
"She couldn't get me to cum last night, so I Thumb Plugged myself."
by Brdmn68 January 10, 2018
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Thumb Plug

The act of sticking one's thumb in the ass of their partner while in the doggie style position.
While fucking my girl doggie style, I thumb plugged her and she loved it.
by Too So Cray September 12, 2013
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Kentucky thumb plug

Just put a thumb in it
“Hey bae can I Kentucky thumb plug your anus?”
by VladdyPatty May 20, 2021
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