Peter Piper's P Products is a company which specializes in items beginning with the letter P. (First: Episode 2061)
Although the business is not actually located on Sesame Street, a commercial for the firm has aired with manager Porter Pepper as spokesperson.
The company's clients include Peter Pan and Pablo Picasso. Eventually, Porter gets a call from his boss (Peter Piper himself) that the company has been purchased, and will soon change to "Sam Singer's S Stuff Store." Not taking a minute to stall, Porter summons the staff on the phone to stand by, as he begins to chaotically re-decorate his office, removing all "P" products and replacing them with "S" stuff.