My old man's favourite story was about when him and a few mates were on the Kop at Everton in the '30's (no segregation then).
He told how a little Scouser in front of him kept turning round and giving him verbals to the point where , early in the second half he decided to do something about it . This something was to lob out his todger (and it was a good one I can tell you) , slip it in the blokes pocket and piss in it .
He told me that for the next few minutes the Scouser stood there in a cloud of steam and never said a word , either then or for the rest of the match .