idiot friend

A man in a black t-shirt and backward cap stands before a white wall with "2+2=" written on it, holding a marker and making a hand gesture as if to solve the equation, then turns to write on the wall. The scene cuts to the same man in a red hoodie and red cap, sitting at a desk with an open book, drinking from a bottle and reacting with surprise. The scene cuts back to the man in the black t-shirt, now showing the equation "2+2=" with a hand drawing next to it, as he holds up two fingers. The scene cuts again to the man in the red hoodie, now looking down at the book with a shocked expression.