The Muppet Show 1x6

Scooter talks Fozzie into doing "the telephone pole bit," and Fozzie practices dutifully until he finds out what the bit is: Fozzie dresses up as a public telephone, and Scooter asks what his name is. "Mike Oznowiczki," Fozzie says, and Scooter exclaims, "Oh, so you're the telephone Pole!"