For some reason it reminds me of a mini-series from years ago about a bunch of football fans who were racist. On a night out they spot a black guy in an expensive car, pull him out and beat him up. Then they notice it's their team's star striker, and apologise to him: "Shit Denny, we didn't realise you were black!"
Didn't really get the dog joke, but if anyone can tell me the name of that damn series I'd be grateful.
