GYATT (also my last image only had the n word because the name of the template did)

Hey guys, it's Peter Griffin from Family Guy here to explain the joke.
So basically, this meme is an animation of Freddy Fazbear, from the popular indie horror game Five Nights at Freddy's shaking what seems to be his ass.
What is funny about this meme is because the implied humor is mildly vulgar in a sense and is out of character for Freddy.
The unexpected randomness is the punchline, I did not see that coming!