by Trigger3866 May 20, 2021

by JimboSlice13 July 14, 2017

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

To receive two thumbs up the butthole at the same time. Could happen with or without notice. Can be performed by one or two different people.
by Gipppppppo May 11, 2023

Usually referring to album browsing on Facebook or the likes, when you don't have the time or the inclination to look at every photo in the album - instead you graze through the thumbnails and pick the ones you want to see closer.
Oh yeah I was thumb grazing through Johnny's Christmas album on Facebook and found three photo's with me in it.
by Tealla January 3, 2009

The act of the male partner sprinkling hot spices over his thumb, followed by him sticking it in the female’s vagina and keeping it there until she salutes.
by Coach George May 25, 2018

by Warday1780 December 10, 2022
