Friends film staged pranks where someone secretly takes or swaps something, like a phone lifted during a hug or a snack bag swapped for a fake, then shows the loot to the camera.
Almost no dialogue here: a snack bag changes hands, the thief runs off and yells into the lens, and something white is left on the chair. You don't need the language to get the gag. Most people say they understand 0% and still call it a new meme.
Same creator, different gag. He shows off a bag of drinks, then a bowl of noodles he eats right there, and ends on an open-mouth shock face. The humming sound is what people riff on, and some point out it's the same guy from the other clip.
A long hug in a big living room hides a phone being lifted from a pocket, and the final shot holds the phone up to the camera. The caption tags justiceforkiara, so it reads like a sibling fight. Most people in the comments are just wondering what's going on in that house.