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stands for "honest to god knock me out"

a phrase created by Ariana Grande via Twitter when something is overwhelming
Ariana Grande is releasing 3 songs this week
June 13: Dance to This - Troye Sivan (feat. Ariana Grande)
June 14: Bed - Nicki Minaj (feat. Ariana Grande)
June 20: The Light Is Coming - Ariana Grande (feat. Nicki Minaj)

"i cant handle all this, h2gkmo"
by @tattooednegm on twitter June 15, 2018
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h2gkmo is a term made by ariana grande. she first used it on twitter.

person one: omg dude, did you know ariana's album is coming out on august 17th?
person two: it's going to be amazing. honest to god knock me out ariana !
by getwellsoon August 14, 2018
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Person 1: hey remember when ur goat sucked his own dick
Person 2: honest to god ...... if anything like that ever happens again knock me out ... h2gkmo
via giphy
by Pete Grande June 15, 2018
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H2GKMO is a phrase Ariana Grande stated on Twitter. It stands for Honest 2 God Knock Me Out.
News Reporter: Ariana Grande is releasing three songs this week!

Ariana Grande: H2GKMO I can't handle this!
via giphy
by Arian.aGrande February 23, 2019
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