It's only ever funny when it happens to someone else, so if you happen to be one of the people having poo hurled at their face in this week's Friday Funny then ... that's unfortunate.
Some say what separates us from the apes is the ability to think critically. We think these animals have however analysed the situation, and in response to camera's being shoved in their faces they've decided thrusting faecal matter back at the faces of humans is the best course of action.
It's not for everyone's taste - especially not the news reporter standing underneath an infestation of birds - but take a look. We challenge you not to laugh.