thumb locker

Two small natural holes on the lower back of the girls.

When you see the girl lower back from behind, there might be two small holes, which will fit the thumbs of the hand if you grab the girl around the waist. That will lock the thumbs from sliding on the girls back. Thumb locker will allow the person holding the girl's waist to hold her firmly.

by Little Fluffy Clouds January 8, 2012

Crotch Thumb

A term to describe someone's embarrassingly small penis and claim that it is massive. - First described by @_james_3005. 2017

Chelsea "He has a massive penis, Chantelle told me yesterday after she slept with him"
Bradley "What? That lying bitch, she told me he had a crotch thumb!!"

by THESPITFIRES October 19, 2017

kentucky thumb

When your boom stick booms the wrong way, and you have to stick your thumb inside the whole in your neck.

Did you see the new ak-50?

Ya right before the Kentucky thumb.

by Lemomlimepie6 May 21, 2021

Thumb Thug

Someone who talks mad shit online, without the intention or means to back it up in person.

I wrote a post on facebook, and a thumb thug came by talking shit.

by Moe.Ron24 May 13, 2016

Kentucky Thumb

The act of shoving your thumb into an ovulating female, right at the point of orgasm.

“Gosh, I wish I was having a heavy flow. Ricky gives the best Kentucky Thumb.”

by DougGimmiedome May 20, 2021

Kentucky thumb

When you have a girl in doggy and you put your thumb in her ass and press hard inside.

Bro that girl last night was freaky, I gave her the Kentucky thumb and she loved it.

by Don’t_worry May 20, 2021

Thumbs-it-up

Its when you give a thumbs-up to a word on urban dictionary.

Guy1: Hey dude go on urban dictionary, go to my word and thumbs-it-up.
Guy2: I'm thumbsing it up now.

by Tiny Doug April 6, 2010