A sometimes loud, always odorous, expulsion from the butt which occurs while sleeping. Also see fart.
Woman: I hardly slept at all last night.

Man: Why? Was I snoring?

Woman: Not exactly. You were butt snoring, which is why I ended up sleeping in the guest room.
by Sethington July 11, 2008
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wife: ew did you just fart?
husband: nah hun, was a butt snore.
by eyepatchpete July 26, 2020
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When a fat guy goes to sleep and farts then sucks it back up.
His butt snores only smelled for a second, as he sucked them back up.
by MagiMash March 24, 2016
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