thumbing 

The hip new way to indicate you are texting. Matter of fact; all the really cool kids now refer to texting as "thumbing."

Jenny and I were thumbing most of math class today.

(another correct usage would be)
Thumb ya later!

(another correct usage would be)
I will thumb you later.

thumbing by Cyprus Denton Fekks October 1, 2011

thumbing off 

the process of clicking on your own submissions thumbs up button

like jerking off your ego

That idiot spends the whole day on various websites just thumbing off

example 2: every time i check my urbandictionary entries i end up thumbing off

thumbing off by streigh July 23, 2009

Giant thumb in a turtleneck 

Slang for penis

I don't see what the big deal is about a penis, it looks just like a giant thumb in a turtleneck.

Giant thumb in a turtleneck by thumb in a turtleneck December 3, 2009

ass-thumbing

Ass-thumbing is when you go to the bar and drink Captain and ginger, and then you strategically place your yourself between 2 people and nonchalantly stick your thumb in someone's butt. The goal is not to get caught and to make the person getting ass-thumbed think it was someone else. Ass-thumbing also goes by " doing the Crosby" Ass- thumbing is believed to be a German tradition, and in the States, there is an ass-thumbing group in the mid coast Maine area.

Hey, let's go out to the Myrtle and do some ass-thumbing.

ass-thumbing by Aaron goodwin July 6, 2014

Up-Thumbing Self 

The act of up thumbing yourself on your own definition on Urban Dictionary after it was approved.

*Opens e-mail*
*Clicks on Urban Dictionary e-mail*

"Thanks for your definition of Up-Thumbing Self!

Editors reviewed your entry and have decided to publish it on urbandictionary.com.

It should appear on this page in the next few days:
(Link here)

Urban Dictionary"

*Clicks link*
*Thumbs self*

Up-Thumbing Self by PanzyWarfare October 17, 2009

double thumbing 

Texting on two mobile devices while holding one in each hand

"I saw this crazy girl at the club last night. I was going to go talk to her, but she was busy double thumbing at the bar."

double thumbing by sweet650 March 19, 2009

what’s thumpin 

What’s up? What up doe? How are you doing? What’s happening?

Person 1: what’s up?
Person 2 (extra cool): what’s thumpin?

what’s thumpin by Jennifermm0720 January 31, 2018