Fridge / The Simpsons S7 E15 "Bart the Fink"

• Given that Krusty's illiterate, how was he able to write up a signature, let alone create a new one that still resembles the original?
  • Some episodes suggest that Krusty has since started learning to read an adult, e.g. in "Lisa On Ice", as he screws up the national anthem, he says to himself "I shouldn't have turned down those cue cards...".