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A physical reaction that occurs with a males reproductive organ when sexually aroused. Blood fills the shaft and the Penis becomes erect and firm. The cowpers gland kicks into gear producing the clear fluid that trickles from the end of the tip. Making a wet spot in the shorts or dribbling off or down the erect crank. What happens beyond that is determined by the situation at hand. No pun intended. He has achieved a Thoroughly Hard Upright Dick. Thud.
While I was sniffing Theresa's Balloon Knot, I got one hell of a Thud and ending up pulling the old Bung Licker act on her. Her Gumhole softened right up and she let me Cornhole her like mad. She said I was the best Anal Intruder she has ever experienced.
Thud by The King Cornholer April 16, 2008
Nickname given to the Republic F-105 Thunderchief. The Thunderchief was primarily used as a Ground attack aircraft during the Vietnam War.
The Thuds rolled in and gave Charlie a wake-up call he'd never forget!
thud by JonathanChance September 29, 2003
Acronym for That Huge Ugly Dick.
When Ashley saw his THUD for the first time she cried in fear and disgust, then proceeded to instinctively suck it dry.
THUD by Matthew Tremor IV April 18, 2018
The sound of a smitten claymate hitting the ground after hearing/seeing/thinking about something incredibly sexy/hot/adorable done by Clay Aiken.
Awwww...! That adorable TUSHY!! That TUG!! THOSE EYES!!!! (sigh)... **THUD**!!!
thud by Shameless Plug January 4, 2004
(Noun) One unit of hash (or hashish) of sufficient size and potency that will alter the users state of consciousness to 'high as a fucking kite'.
Jack: Dude..
Bob: What..
Jack: That was a good thud of hash we just smoked.
Bob: What hash?
thud by therealanonymoose October 5, 2011
the sound/action Grobanites make when they see a hot picture of Josh Groban
OMG THAT PICTURE IS SO HOT!!!!11

*Thud*
Thud by Rachel March 28, 2005
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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