If you've got more ambiguous characters or stock stereotypes, the plastic comes through and they don't work as well.
Bill WattersonS...For Stupendous! T...For Tiger, ferocity of! U...For Underwear, Red! P...For Power, Incredible! E...For excellent physique! N...For...Um...Something..Hm, well, I'll come back to that... D...For Determination! U...For...Wait, How do you spell this? Is it "I"??
Bill Watterson