Of course you don't. I don't remember either, because according to Wikipedia, YB went to Boomerang in 2000, and CN began using these bumps in 1997, so it was used from July 7, 1997 to March 31, 2000. Same with Top Cat's bumpers (which I happen to remember since I watched that show all the time).
Major Payne: Aw, phooey! Don't you ever read any of those stories about little people who do big things? Little Red Riding Hood! The Three Little Pigs! Spike Lee! The Little Rascals! How about the Little Engine That Could!