Define Thumb Plug Meaning

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 Anjela
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 Bobbi
Kentucky Thumb Plug

β€œHey bae can I Kentucky thumb plug your anus?”
By Elwira