Hanging Tree

Alright, listen up, buttercup. This joke is about a depressed friend who wants to high-five a tree. But get this, the tree "left him hanging," which is a pun because it means the tree didn't high-five him, and it also refers to the feeling of being left hanging, which is something people feel when they're depressed. It's funny 'cause it uses wordplay to talk about something sad. You probably don't get it because you go outside.