I think the one I posted was funnier tbh, ...who the heck would pee in their own kettle?!
Years ago though and this story is along similar lines, my mate who needed the toilet late at night whilst staying over his Mrs house didn't want to go to the bathroom for fear of waking up her parents.
So in his wisdom went to the toilet in a pint glass next to the bed and then goes back to sleep. He's later woken up with his Mrs yelling at him as she'd just realised that the "yellowish water" she just drank was in fact her boyfriends pee. Unbelievably they actually stayed together & even got married years later.