Its funny to me because I like physical humor. We see everything from a perspective that those others in the store do not. All they remember is some guy with milk jugs walking past them - then one second later they're on the floor, there is a big crash and an empty milk jug is seen rolling down the aisle.
The first video did this much better though - the UK guys just stood there and spiked the jug, whereas those in the first video typically throw themselves into the air in a ridiculous looking fashion. This is what we get to see, and the others don't. We see the actual (ridiculous) transition from 'walking with milk' to 'milk explosion - plastic goes flying'.
From some other customers' perspective in the store, its the same point of view you get when a cartoon character accidentally crashes his bicycle into a storage closet, and all we get to see is a loose wheel rolling out from the closet - maybe a cat shrieks.
C'mon guys. Its not really so complex.
"How the f^%* did you break the light fixture in the ceiling when you slipped??"
We here know how.