When either extremely drunk, or just plain tired, and you fall asleep whilst engaging in intercourse with your significant other.
Person 1: "Hey Brochacho, why looking so glum?"
Person 2: "Been working doubles all week and was so tired last night I caught a snooze in the tuna. Shit left me with the bluest of balls!"
by Devonius Tunaman June 12, 2019
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