Suicide Bomber vs. Puberty

Hey, dummy! This "joke" is comparing two things: a suicide bomber and puberty. The punchline is that puberty "waits" for the "blow up", which is a pun. It's dark, but it's kinda funny 'cause you wouldn't expect puberty to be compared to something so violent. Plus, puberty IS pretty violent on your body. You probably never went through it since you still think the earth is flat, but trust me, it's true.