Wetaroid

Listen up, buttercup. So, there's this dude named Wet, right? And the joke is playing on words, like when I'm telling you that you are wet behind the ears. Instead of asteroid, which is a big rock from space that hits Earth and messes stuff up, it's "wetaroid". Get it? Because his name is Wet, and it's a play on words? I know. You probably use Internet Explorer.