This is going to take some explaining, but I'll try to keep it to a minimum, bear with me. :
There was a comedy special on NBC that aired circa 1973 or '74. Unfortunately, I don't remember who starred in it, and who else appeared.
This program aired during the Arab Oil Embargo, when gas prices started a very rapid uphill climb, and there were long lines at gas stations everywhere. People were mad and frustrated at both the oil companies and at Arabs in general.
Somewhere in the middle of the show, three actors dressed like sheiks are musically pacing towards the camera, singing "Roll out the barrel, we'll have a barrel of fun", and while they're singing "The Beer Barrel Polka", suddenly a giant metal barrel labeled "oil" comes from above the camera, and barrels right into the trio for a perfect bowling strike!
I don't know if the audience reaction was canned or not, but they were laughing hysterically, and so was I. I laughed uncontrollably for a good half hour. I wish I could remember other details of this show.
The only thing that made me laugh longer was the restaurant scene in "Monty Python's Meaning of Life". If you've seen it, you know what I mean. If you haven't, don't ask, just see it, and you won't have to ever ask!