Nifty Shades of Beige

Nifty Shades of Beige is a fictional book written by Harry Mathas. It is a play on words of the title of the popular, more adult-themed novel, Fifty Shades of Grey. Guppy is seen reading it with a wide-eyed expression at Funk E. Fester's with Spencer during IBust a Thief.

Credits to

 * iCarly Wiki on Fandom