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1) verb; to destroy objects in your surrounding area while making an over-the-top attempt to kill an insect.

2) verb; to destroy ANYTHING in your surrounding area due to unnecessary exuberance and really putting a damper on the evening.

3) noun; to be the person who ruined the evening due to over-exuberant gestures causing unneeded cleanup and the loss of personal possessions.
"You completely rumstummed my entire collection of hummel figurines over an insignificant mosquito!"

"Chill out Gregory, thats the third glass you've broken today, its only a WNBA game, who's the Rumstum now?"

"Katie is a fucking rumstum. and i hate her ugly face and guts."
Rumstum by Cuisse C. March 7, 2010
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the biggest boss that you've seen thus far..
"Rick Ross says that he's the biggest boss that you've seen thus far..."

"Yeah hes basically Rustum."
Rustum by SeanJ March 18, 2009
Related Words

RumTumTugger 

A contraceptive act performed during missionary style sex whereby the male partner removes his erect member from his female counterpart's vagina before ejaculation, thus allowing the female to firmly grab the male's prick-shaft and stroke him to completion spraying seminal lust ropes upon her abdomen.
"Ernie came over last night and we fucked, but we don't like babies. He pulled out and I gave him a RumTumTugger so he wouldn't fill me with worry."
RumTumTugger by horseoncasters August 15, 2014

Rumstumper 

A transradial amputee who consumes copious amounts of rum, and then inserts their stump into the vagina or anus of another individual.
Me: Hey Brad, I heard you took that chick Tassie from tinder out on a date. How did it go?

Brad: Oh, you know, we watched a movie, had some rum, and then I gave her a good old stumping.

Me: Oh Brad, you little rumstumper.
Rumstumper by Happy Flaps June 24, 2017
Rumatum is another word for stomach

Also known as a rumatum-tum
"Man, my rumatum kinda hurts"

"Bro, my rumatum-tum kinda hurts too"
rumatum by Yaoi_hands July 3, 2020

Number Rumtum

A daily number-based game which is highly superior to Wordle. How many tries will to take you to get a Rumtum?
Omg I got the Number Rumtum on the first try today guys.

A Rumtum in one? Go on my son.

R-Tray (Rustum) 

He acts a little Homosexual and is very loud, allergic to women and play league of legends.
Look at that short little R-Tray (Rustum) over there.
R-Tray (Rustum) by Kameron 1 April 19, 2023