Friend, you so faaaat.
Me: Boy, at least I'm not built like a Nintendo Switch.
Alright, listen up, buttercup. This joke is all about body shaming but in a fun way (kinda). The first person is calling their friend fat, and then the friend claps back by saying at least they ain't shaped like a Nintendo Switch. It's funny because, well, Nintendo Switches are kinda flat and wide. I bet you are too.