When a male places another males entire penis, including his balls into his mouth, while still managing to slip his tongue out and lick the mans asshole.
Bobby: Hey Dan, I was completely mind blown last night!!
Dan: Why, what happened ?
Bobby: Steve gave me a Koeppen last night!!
Dan: What the hell is a Koeppen?
Bobby: Steve took my entire dong and balls in his mouth and still was able to lick my asshole!!!
Dan: WOW!! That's amazing Send Steve my way asap!!
by Jimmy magina January 7, 2017
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a person with a massive god complex and thinks he is better then every body else
omg chad is such a koeppen
by Cocio March 10, 2021
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a person who is so competetive that it is almost unhealthy he cannot lose or he will actually punish him self by actually doing exercise
wtf peter why are you being such a koeppen
by Cocio May 12, 2021
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