"Do NOT give a wizard a vial of piss he will drink it and say "ohhhh NOOOO, I thought that was a potion, but alas, it was piss" but he knew from the beginning he just drank it anyways"

Wat

I'm just pouring it down the drain anyway, if some fella can get some joy out of it then why wouldn't I just let them have it?

Literally costs me nothing and the wizard might bestow upon me some cool magical trinket or secret knowledge if I'm lucky.