Boomerang Thrower's Fear

Listen up, buttercup! This genius threw a boomerang, right? Now, a boomerang is supposed to come back. So, this dude is scared because he knows that boomerang is gonna smack him in the back of the head someday. It's like waiting for your mom to find out about that party you threw, but instead of a lecture, you get a wooden weapon to the skull. You probably don't even know what a boomerang is, huh?