Mxyzpixilated - S2-E8
Mxyzptlk: Your three months are up! And this time you're not gonna cheat me of my fun.
Superman: Oh, it's you again, Mr. Kltpzyxm.
Mxyzptlk: NOT Kltpzyxm! Mxyzptlk! Now, ï»¿ the first thing I'm gonna do - ah, nuts! [Disappears.].