Must have been on Carol Burnett or one of his own variety shows, or appearance thereon elsewhere.

Sorry I couldn't be more help, always enjoyed Tim. Helped me find a pretty informative comedy site though.

http://www.comedystars.com/Bios/conway_tim.shtml

Tim Conway

December 15, 1933

A pudgy, balding, baby-like bumbler on sitcoms in the 60's, Tim Conway first made a name for himself playing Ensign Charles Parker on "McHale's Navy." He was the chubby-cheeked dope who sputtered a few confused syllables, pouted in bewilderment and ultimately showed a dim-witted resolve to obey orders.

Initially a "reluctant" performer, Conway had originally worked behind the scenes as a television show director in Cleveland. He was born in Willoughby, Ohio. Off stage he was interested more in athletics than theatrics. He participated in Golden Gloves tournaments and had his nose broken a half dozen times. The last occasion was while rocking on a wooden horse and smashing face first into its mane.

After "McHale's Navy," Conway recorded a pair of comedy albums in 1967 and 1968 but still ended up playing a sitcom bumbler on "Rango," a Western parody that sported a (pre "Blazing Saddles") raving theme song by Frankie Laine. He hosted the one and only episode of the legendary bomb TV show "Turn-On."

Conway got a chance to present a wider variety of comical blank-faced dopes when he joined the cast of "The Carol Burnett Show." Among audience favorites was the straight-faced Swedish office manager with the semi-scatalogical name, "Mr. Tudball." Known to break-up his co-stars with deadpanned ad-libs and improvised pantomime, Conway's talents were thoroughly appreciated by Burnett. She said, "The man is a comedy genius. I think Tim, had he been in silent films, would have been as big as any of them. He comes up with incredible pieces of business; he's a brilliant schtick artist, an almost lost art."

After winning three Emmy awards for the Burnett show Conway returned to films as the title character "The Billion Dollar Hobo" and both wrote and starred in "They Went That-Away." He then teamed up with Don Knotts for a few light, typically bumbling family-oriented comedies. In 1985 he and his friend from his days on "The Carol Burnett Show" Harvey Korman tried for a film partnership which, though not too successful, extended over the years to include TV apperances and commercials. In 1989 Conway played Felix to Tom Poston's Oscar Madison in a touring company of "The Odd Couple" and the following year starred in a "Candid Camera" styled special, "Tim Conway's Funny America," playing practical jokes on unsuspecting citizens.

Conway's major successes seemed to be in the 60's ("McHale's Navy") and the 70's ("The Carol Burnett Show"). In the late 80's, he was once again in demand for variety show appearances thanks to a new character, "Dorf." This was a ludicrously serious lecturer on sports -- who had the handicap of being able to wear bermuda shorts as full-length pants. Conway wryly noted "Harvey (Korman) said my career was over and this piece of crap saved me. Which is probably true."

While there was something tasteless about making fun of a man whose legs were so short his knuckles could touch the ground and he was forever tipping forward or backward to balance himself, audiences found it inexplicably hilarious. Conway achieved the effect by standing in a hole, his shoes on his knees. He achieved big sales with a series of "Dorf" video cassettes in the late 80's and early 90's.

McHale's Navy (1964), McHale's Navy Joins The Air Force (1965), The World's Greatest Athlete (1973), The Apple Dumpling Gang (1975), Gus (1976), The Shaggy D.A. (1976), The Billion Dollar Hobo (1978), They Went That-Away (1978), The Apple Dumpling Gang Rides Again (1979), The Prize Fighrter (1979), Private Eyes (1980), The Longshot (1985), Dear God (1996), Speed 2: Cruise Control (1997), Air Bud: Golden Receiver (1998)

The Steve Allen Show (1961), McHale's Navy (1962-66), Rango (1967), The Tim Conway Show (1970) The Tim Conway Comedy Hour (1970), The Carol Burnett Show (1975-79), The Tim Conway Show (1980-81), Ace Crawford, Private Eye (1983), Tim Conway's Funny America (1990), Disney's Hercules (1998)

AUDIO: Are We On (Liberty), Bull (Liberty), Geraldine, Don't Fight The Feeling (ten minute sketch with Flip Wilson); VIDEO: Dorf on Golf, Dorf's Golf Bible, Dorf and the First Games of Mount Olympus, Dorf Goes Auto Racing, Dorf Goes Fishing, Dorf on the Diamond, Faerie Tale Theater: Rip Van Winkle, Tim and Harvey in the Great Outdoors