He actually only worked the registers, but made himself a sweaty cock shake every night for two years!

I mean I've been in the back of a McDonald's before. I can see a little bit of sleight of hand getting a few extra nuggets in a box here or there but I'm having a harder time visualizing how the fuck you would manage to pull your pants down and stick your willy in it. Additionally you would have milkshake all over your cock and it probably wouldn't be very pleasant. I really just struggle to envision how the fuck you would get away with doing that even one time given how much of a slave drive working at McDonald's is.