Here is 1 saying encoded using a letter for letter replacement:

Q: NRY JIWP GIYPVEU FRVU CL LIZV LR ANIWXV I GCXNL DSGD?
I: PRS YRW'L MCWF I GIYPVE YNR AIW ANIWXV I GCXNL DSGD. WRY, CM
PRS'EV GRRZCWX MRE I GIYPVE LR UAEVY I GCXNL DSGD...