Visitors to Paignton Zoo are being entertained by one of the residents -who's taken to pulling faces.
Kiondo, a 14-year-old Western Lowland Gorilla continues to stick his tongue out at anyone who passes - amusing visitors with his antics.
Bemused keepers say they don't know what the 186 kilo gorilla means by the gesture.
But, unlike most parents, who try to teach their children sticking out their tongue is rude, we'd challenge anyone to tell this gorilla what to do!
Gorillas use all their senses to communicate. They grunt, rumble, adopt various body postures and pull faces to indicate mood.