Oh! I got one! I got one!
How about flooding the entire earth and all of its inhabitants, then promising to never rub out mankind again using floods (although promising to burn the flesh of of folks at the Big A? Then, turning all of the flesh to become bird food).
But, back to the flood of Noah's day: God doesn't flood the entire earth at one time. Nowadays he chooses to flood it section by section: Tsunamis, typhoons, hurricaines, storms, etc. He must be sitting up ther on his Golden Crapper saying, "Uh-Uh! Remember, I only promised I wouldn't flood the entire earth. See? I have this damn rainbow to prove it. Now, clean up Louisiana, you petty humans!"
Anyway, I actually don't believe in the flood (as told by the bible), but, it's a wacky thing if it did happen.