leg thumb

Penis

Emily saw my leg thumb when it fell out of my swimsuit today.

by Bain_Train September 04, 2017

chuck thumbs

To use thumb chucks in a competitive manner

Hey man wanna go chuck thumbs after school?

by King lewy the third December 27, 2017

Fortnite thumb

Someone who plays Fortnite enough to duck up there thumb.

Dawg that’s some crazy fortnite thumb you have.

by Thatdude43 April 29, 2025

Thumb Rack

They're the dimples on the lower back where you can rest your thumbs when hitting it from behind.

Did you see that girl when she bent over to tie her shoes? Yeah she had a nice set of Thumb Racks.

by JPetto19 February 01, 2024

Thumb Rack

The dimples located on the lower back used to rest the thumbs while hitting it from the back.

While Tiffany was bent down tying her shoes, Alec shouted" Those are some nice Thumb Racks!"

by JPetto19 December 13, 2023

Thumb Rack

The two dimples on the lower back that are used to rest your thumbs while hitting it from the back.

When Tiffany raised her arms at the concert you could see the dimples on her lower back. Alec said "That's a nice set of thumb racks"

by JPetto19 December 01, 2023

Thumbing it

The act of placing your thumb into your own anus, usually while masturbating

“I caught your dad thumbing it in a bus stop yesterday”

by Big swanno October 13, 2020