"...you don't buy beer, you only rent it!

Reminding me of the time I walked into a men's room at a bar and saw a guy standing at a urinal, head tilted back, pouring beer in at the top while pouring the last one down the drain...

(I was in the Kingston Mines cafe once, about 1972?...I don't remember noticing)

And I 'think' in lower grade school in Kansas, we raised our hand and asked for "the restroom paddle" a piece of wood we had to carry to prove we had permission to be out of class. I never even thought about it BEING a euphemism back then.