Picture yourself in a glass-walled cage. Tiny creatures, strangely hairless and unbelievably shrill, keep parading by, screaming and pointing and generally demonstrating an offensive lack of refinement. The pressure inevitably builds until, one day, you snap.
Luckily for the gawking children in the video, this gorilla at the Dallas Zoo seems more inclined to theater than murder. When he reaches his breaking point, he hurls himself against the glass wall, soiling a couple dozen pairs of underwear in the process, then strolls away, no doubt chuckling to himself.
It's admittedly pretty funny, but he seems to be attempting to convey a more serious message as well: DON'T TEASE THE GORILLAS.