Its not a good idea to tease chimps. They're nasty little B's.
Just a couple of weeks ago, one of Zed's kin attacked a guy and his wife at an animal refuge. Ripped out the guy's eye and bit off his foot, a finger and his testimonials. Definitely not nice! And all because the chimp wanted a share of the birthday cake they'd brought for another chimp. So if Zed ever asks you for a birthday cake, give it to him.