English jokes for kids+Images | If there is watermelon, why isn't there earthmelon, airmelon and firemelon? #7

If there is watermelon, why isn't there earthmelon, airmelon and firemelon?
If there is watermelon, why isn't there earthmelon, airmelon and firemelon?
https://100xhahaha.com/pic!fe2b75f0_ss.jpg