thumbing it in slack

When a man fails to achieve an erection but is undaunted and proceeds to push his penis into the vagina or more commonly anus and attempts sloppy sex by pushing in his penis with his thumb.

Nathan - Aww man im going to jail. imma be some guys bitch. i hope they are tender and start by thumbing it in slack

by SGTKM December 1, 2010

thumbin'

An action in which one does not stop texting

"I am trying to talk to her but she keeps thumbin' on her cell phone"

by Taryn Kerrick Zimmer May 23, 2008

Thumbing

To thumb yourself - to thumb or stick your thumb or finger into ones anus.

Man - "Tom what are you doing?"
Tom - "I'm thumbing myself, it feels very nice."

by Plice December 31, 2011

Toilet thumbing

The act of typing into a mobile communications device while seated in a toilet stall.

I spent like two minutes today after lunch toilet thumbing Sue from HR, I sure hope she understood what I needed. - My toilet thumb must have got blocked due to the basements thick walls. - I know I haven't been able to all day but I will try to toilet thumb you on my next break.

by Phast January 8, 2009

Self Thumbing

When a definition on Urbandictionary.com has little or no thumbs up, and the author resorts to giving his own definitions thumbs ups.

Eric: Where's Tom?

Jon: Self Thumbing his definitions on Urban Dictionary...

by The Mysterious Mister M May 21, 2010

Thumbing

The act of getting kicked out of a gentleman's club by inserting thumb in exotic dancer's anus.

Jimmy got us kicked out because he was thumbing Passion!

by Jerry Lar July 15, 2010

Thumbin

Texting

Guy 1: "Bro who you thumbin right now?"

Guy 2: "That girl from last night she keeps blowing up my phone"

by Reppin516 July 8, 2014