Thumb sucker 

To be pathetic and lousy at something.

"I am totally a thumb sucker in that controller thrower game"

Thumb sucker by Stupid idiot 4 April 9, 2009

Thumb sucker 

A guy who is actually an idiot, geek, goofus, stupid and behaves like a dumb.

Joe is such a thumb sucker, he still plays with marbles.

Thumb sucker by Lean January 8, 2004

thumb suckerjeff morgan

jeff morgan is the biggest fagot, he always sticks his hands down his pants and then sucks his thumb...he also thinks he can take nebody..hes a fucking pussy...he couldnt hurt shit...he lies about EVERYTHING too...psh! fucking liar...cant stand him!!!

yesterday while he was driving, he had his hands down his pants and then stuck his hand in his mouth..thats fucking sick...and he has a big nose!

thumb suckerjeff morgan by mike oxlong April 18, 2004

Thumbsucker

An adult who whines about very trivial things. Making them appear childish.

A woman sitting at a traffic light, behind a car displaying a non-Christian Evolve Fish emblem, yelled unchristian obscenities to the driver.
The passenger in the car next to her rolled down his window, and calmly asked? "Do you realize how childish your behaving?"
At this she screamed more angry obscenities.
The passenger calmly waited for her to calm down, and as if speaking to a child, said. "Where's your mommy? Thumbsucker."

Thumbsucker by Chat Noir May 24, 2008

Thumbsucker

An immature person.

Donald Trump is a thumbsucker.

Thumbsucker by TRAVVIS December 29, 2017

Thumbfucker

A thumbfucker is a person who is constantly texting on their cell phone.

David called Phillip a thumbfucker as he drove by watching Phillip text on his phone.

Thumbfucker by Cagney February 24, 2010

thumbsucker

(definition not related to the movie by the same title)

Apparently a newspaper article that Veep Dick Cheney, (rumored de facto President), seeks to discredit.

Possibly reflecting British slang for "immature weakling" implying that intellectual "weenies" are piling onto Cheney's decline in power with pondering analysis.

On "Meet the Press", 9/10/06, host Tim Russert questioned the Vice President about an article in the New York Times published on the same day entitled "Cheney’s Power No Longer Goes Unquestioned" by David E. Sanger and Eric Schmitt.

(Admittedly the specific meaning needs pegging better, but hey this is a start.)

"...that (New York Times article) is just another one of those thumbsuckers..." -- Richard "Deadeye Dick" Cheney (Sept. 10, 2006)

thumbsucker by Slangard September 10, 2006