Sloppy Moe

It's one of the best and underrated Looney Tunes characters ever: Sloppy Moe. He's the one in "Injun Trouble" (1938), later remade in color as "Wagon Heels" (1945) who proclaims, "I know something I won't tell, I won't tell, I won't tell..." to the tune of "London Bridge".

Strangely, I prefer the remake of this Porky Pig cartoon as it has a more satisfying ending than the original, plus it's in color.