rotating the wrist with hand out straight so that the side of the tumb bangs on a desk. In a thumb thumb this is done twice in succession. This is used by teens taking their exams to signal to others around them they are finished and bored. This usually recquires another thumb thumb as a ressponse to show that it is understood and that the second person is also finished and bored.
by Jason Shettland March 22, 2009
Get the thumb thumbmug. A recently formed yet very successful gang based out of Jensen Beach, Florida. With branches spreading as far as Orlando. The gang consist of many key members such as: Thumb Master Poo, Squirts, Big Dump, and Smelly Mike. Also there is rumor of the gang releasing a new album called 'Under My Thumb' with a potential hit single called 'We Just Thumb'n'. Ways to identify a Brown Thumbs member is a BT located on their neck as well as their thumb tattooed brown.
by Thumb Master Poo February 15, 2015
Get the Brown Thumbsmug. "Ohhh- weee look at that phat thumb, pressin up against her panties. Thang big as hell, finna pop out!"
by atm TJ July 30, 2019
Get the Phat Thumbmug. by Trigger3866 May 20, 2021
Get the Kentucky Thumbmug. The acceleration of typing speed but deceleration of the accuracy in the words , content and context while texting due to thumbs fatigue although thought flows are exponentially high. Also known as FBST syndrome.
I was texting this girl come over to my room but instead I got hit with Fast Brain Slow Thumb syndrome and wrote “Come Over my hoes” so I blew my chances.
by Sassy Sheesh November 24, 2021
Get the Fast Brain Slow Thumb Syndromemug. by JimboSlice13 July 14, 2017
Get the Gorilla Thumbmug. by queerbungeefrog October 16, 2022
Get the Two Thumbs Upmug.