Runkbulle is a Swedish national sport where young men gather together. They then form a circle, put a biscuit in the middle of the circle, lower their pants and start to masturbate on the biscuit. The only rule there is that the last one to come has to eat the biscuit.
Pär, Gunnar, Lennart and 5 of their friends got together for a round of runkbulle. Lennart lost and he got a mouthfull of man juice.
by JavlaLennart September 19, 2008
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An act of a large gathering of men cum over a wheat bread (preferably a cinnamon bun). The one who comes last will have to eat it.

A semi regular joke amongst male teenagers but nobody will admit if they ever done it.
- we got so bored yesterday that we actually did try runkbulle.
- ew, who got to eat it?

- Gösta, but don't tell him I said that.
by MissDecibel June 28, 2020
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Runkbulle is a kanelbulle (cinnamon bun) with topping, which looks like if someone has runkat (masturbated) on it.
Incompetent baker: I have made cinnamon buns!
Björn: Aah kanelbullar.....
Incompetent b: They're with topping!
Björn: Oh no! They're runkbullar!
Incompetent idiot: I want a runkbulle.
Incompetent idiot: *dies*
by Fuckfakekanelbullar February 27, 2020
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When very many guys in circle funk tillsammans on a bulle. The guys that cums last have to äta the bulle.
Hey William wanna playrunkbulle?
by ComicArrow September 20, 2022
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