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A bass-like sound, that sounds like any of the following:

* the sound of a pedestrian being hit by a car
* a funky bass-line
* the repetitive sound of a heartbeat

An apparel and gift company in Cambridge, MA, called "Thoomp!" was named after the onomatopoeic "thoomp" sound.
Thoomp!'s company logo (www.thoomp.com) suggests the primary definition listed here.
thoomp by Thoomp! August 19, 2009
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a badass word used by people who are too dope for normality
Dude those shoes are thoomp
thoomp by rager97 August 2, 2011
Related Words
The sound of the action that occurs in the beginning of having sex.
Bro I heard you smashed Hailey .

I had too bro she was so bad, i was all in there just like thoomp!
Thoomp by Silly diamond March 21, 2017
To insert something in an anus. Comes from the sound created.
I'm going to ram this in your ass. Thoomp.
Thoomp by Eric Thomas January 27, 2009
When u anally abuse yourself as you lay peacefully asleep and give yourself cuts inside your anus and shit blood.
He was so out of it last night he thoomped himself
Thoomp by Grozmotx July 20, 2019

heavy thompson 

A heavy Thompson is a blackjack or dice bet where the player increases his stake significantly in order to win money back from previous losing bets
Tony was losing but then placed one Heavy Thompson bet on the hard eight and got it all back

Dave lost a heavy Thompson bet at the end so went home skint
heavy thompson by GamblersRamblers January 4, 2014

Jack Thompson 

The guy who believes that games cause violence and starts many court cases against them. He is actually just introducing a scapegoat that kids can blame when they kill someone
Jack Thompson is really freakin moronic
Jack Thompson by Syco_Simon June 26, 2005
More from Urban Dictionary

briefcake 

"Did you check out the briefcake in courtroom C?"
briefcake by Ben Frey April 6, 2006
Word of the Day on November 3, 2026
Brought to public attention by Bob Woodward and Carl Bernstein in the book on the fall of Richard Nixon, All The President’s Men, ratfucker was Nixon’s term for a political operative who sows chaos among opponents; an agent provocateur. It is thought to have originated among campus political rivalries at USC, and seems to have some usage in the US military.
Along with Nixon’s other ratfuckers, Roger Stone caused fights at otherwise peaceful Democratic Party protests to generate a false narrative that the Democrats were violent and dangerous.
Ratfucker by Ricky Ramjet November 2, 2017
Word of the Day on November 2, 2026
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