Well. I just figured that with the number of things we have in common from our childhoods, WPs would cause an "aha!" reaction.
Did you have 'em? Oh, they were just the coolest thing when I was in 6th grade. "Chock Full O' Nuts & Bolts", "Grave Train", "Duzn't" (the soap for hippies), etc., etc.
I know they have several series over the years. I've also heard that Bill Griffith (of Zippy The Pinhead fame) got his start at Topps doing WPs.
Reason I bring it up is that I was in Big Box Mart the other day and discovered that they're back again! Gonna have to get some.
veg