I know it's common now for people to say 'I don't have any guilty pleasures, I'm proud of everything I do', but that's bullshit offered by psychopaths. We all have things we enjoy which we feel like we shouldn't.
I'll give you one. A free iPhone game called Deer Hunter 2014. It's a really realistic (well, for an iPhone game) hunting sim where you start off killing crappy animals then earn cash to better better scopes and ammo and now I'm in Africa shooting hippos and shit. I feel bad for the animals, but it's quite addictive, nailing that perfect lung shot.
So, tell me yours, the more scatalogical the better.