coffee in, coffee out
Referring to the act of drinking coffee and then urinating soon after. I need a bathroom break—coffee in, coffee out and all that. A: "Are you sure you want to stop for coffee before our long drive?" B: "Oh, right, coffee in, coffee out. That's a good point." I know "coffee in, coffee out" is going to be an issue during the meeting, but I'll fall asleep if I don't have this second cup of coffee.
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