Next time you get a roughie, seeing you are off on monday, dont pour it out, take it back and make him drink it, then worn him that you will do the same with every shit beer he sells you in the future.
Your drains will love you for it, remember, they have to put up with your cast offs now
Hahahahah, he might do me in. He is a big bloke and sometimes he comes up trumps!
I just gotta take the good with the bad!