My forehead blew up because I saw yours at the forehead shop!
Forehead Shop
Explanation
Explain Bear
Listen up, buttercup. This joke is like, when you see someone with a huge forehead at a forehead shop, it's so shocking that your own forehead explodes. Like, OMG, right? And you probably don't even know that foreheads are part of the skull between your eyebrows and hairline. Consider yourself educated, you forehead-gazing dummy.