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 May 2, 2018

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 11, 2013

Kentucky thumb plug

Just put a thumb in it

“Hey bae can I Kentucky thumb plug your anus?”

by VladdyPatty May 20, 2021