This is a clip from John Downer Productions' 'Spy In The Wild 2' starring a group of wild mountain gorillas singing while they eat their fill of up to 20-kilograms (~44-pounds) of vegetation a day, then farting like they're trying to blast off like rockets to the Planet Of The Apes. According to the video, these mountain gorillas "live in a semi-permanent state of flatulence." Ha, welcome to the club! Unfortunately we can't meet indoors anymore.
Keep going for the video
Thanks to Has_It_All, who didn't even offer me a little bit.