What did the pond brother say to his lake sister?
"Oasis!" (Oh, hey sis!)
Pond Brother's Greeting
Explanation
Explain Bear
Listen up, you knucklehead. This joke is a pun. Get it? "Oasis" sounds like "Oh hey sis." The pond brother is talking to his lake sister, see? It's wordplay, you uncultured swine. You probably think water is just for drinking and not for comedic genius.