The Bikini Bottom Yellow Pages is a book featured in a few episodes. It is a reference to the phone book, The Yellow Pages.
The book is designed so that the top third is red and the bottom two-thirds are yellow, with a picture of a possible Bikini Bell phone on the bottom. "Bikini Bottom" is written on the top (red) third in yellow, and "Yellow Pages" is written on the bottom (yellow) two-thirds in red. The book is a phone book that is used throughout the Bikini Bottom.