The Hot Air Salesman is a 1937 Fleischer Studios animated short film starring Betty Boop and featuring Wiffle Piffle.
Betty Boop is the first to listen to his sales pitch, where he promises such wonders as a "woolen hammer and rubber nails", a "sieve that never leaks" and some "brand new antiques".
These include: The gag of an overly powerful vacuum had been used before, and the surprise in this cartoon occurs when it is switched to reverse.
Wiffle Piffle loses control of the vacuum cleaner and its powerful exhaust wreaks havoc, knocking over the furniture and finally blasts a piano through the wall.
His short cartoon body is topped by an unusually long neck and a large circular head.