shark thumb

Shark Thumb.
The sexual act of placing you little finger (pinky) inside your partners anus (butt), while keeping all other fingers tucked in except the thumb that will stand proud and looks like a shark fin just slightly cresting the bottom of your partners posterior (butt) as they lay on their front.

During foreplay Sam Shark Thumb'ed meredith last night, meredith giggled as she looked over her shoulder and saw the shark fin (Sam's thumb).

by Samqwell December 30, 2019

Grindr thumb

The arthritic fatigue you experience in your thumb after spending too much time scrolling up and down on Grindr.

Damn, I just wasted two hours refreshing Grindr and can barely move my thumb now - got a case of that Grindr thumb!

by C Burnett July 25, 2014

thumb zombie

A person that idly scrolls through social media on a mobile device, often without even paying attention to the content. In extreme cases hours can be lost in this state. Interaction of any kind is impossible, one must wait for either a wifi drop out or battery low warning before engaging.

"Sue! You're such a thumb zombie, look at me when I talk to you!"

by Jcerrino December 23, 2016

Thumb swoop

To try to sneakily give a girl the shocker.

Last night I hit my girl with the thumb swoop.

by Nutsack93 October 12, 2023

thumb exercises

The lack of exercise caused by being on a portable game device or smart phone for extended periods of time. Typically Apple or Blackberry users

You're looking a bit weighty. Have you been doing any exercise?

...Only thumb exercises

by Cyberwulf July 18, 2012

Thumb's up

While popularly used as the term for approval (thumb's down for disapproval ) Not many know that in rap or in Fighting word's thumb's up means safety off due to the motion of taking the safety off is putting your thumb's up.

Man, I jumped out the car and went thumb's up real quick. Bout to be blood in these street's.

by AllFatherOfFighting October 21, 2018

Book Thumb

Book thumb is from holding open a book with your thumb and index finger for long periods of time, causing pain in your thumb muscle.

I've got terrible book thumb from so much reading.

by blueberrypancak September 2, 2013