We've just found out that one of my housemates wet the bed the other night.
He got up really early and washed his sheets and tried to cover it up, but my mate saw him. He doesn't know we know though.
He's a massive wind-up merchant so this is a fantastic opportunity.
What I want from you:
Phrases with puns about weeing, wetting the bed etc. etc. that we can drop into everyday conversation. We've already got "don't be such a wet blanket" lined up, and "URINE luck my friend, because I've just made you a brew etc.".