The process of attempting to steal action from someone else's post where the original poster is specifically looking to make a bet. Often occurs in social media but is always in poor taste. Named after the original individual who has since learned proper etiquette.
Dominick was always dunning on Mike's post trying to steal the action Mike was looking for.
by mofo004 October 27, 2020
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someone who dun-dun dem all
dey call her dun-dun...dun-dun em all!!!
by Rae Nicole May 29, 2008
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This usually occurs straight after what we call in guitaring terms, "the thunder chord". This is from the hit Slayer song which sounds like all the others, Raining Blood. After the initial dun dun duns there is another type of thunder which is simply called "pinch harmonic dm7 thunder creatarsm". Then the guitars come in with wee niddle nee niddle nee niddle nee. Of course the dun dun duns keep going throughout the song and so provide fantastic music listening
DUN DUN DUN! wee niddle nee niddle nee niddle nee DUN DUN DUN!
by ThrashBlade March 10, 2008
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1. when expressing deep plot twists, drama and disaster

2. lately people (like, 99,99677% skeleton clique though) also referred to twenty øne piløts drummer josh dun
1. "youre adopted". - dun dun dunnnnn

2. - joshler shipper #1: omg did you read that new fanfic about song forest? so intense like ?!?!?!!!
- joshler shipper #2: omg omg yes the feels like im so dun dun dun...!2!!1!!1!1
by ann_ika August 16, 2016
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Dun simply means "son". Originally started from a handicaped kid in Queens, NY. He couldn't pronounce son, so everytime he said son, it sounded more like dun. Mobb Deep coined the word and still use it today!
Yo! what up dun?
How you living dun?
by pimpsta7 December 2, 2005
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