A number of people also recalled seeing the sketch, myself included.
In it, a group of men sing happy birthday to their friend on a number of consecutive years, the first year ending with "any many more!" , then the second year ending with "and several more!", followed the next year with something like "and some more!", etc. while the guy whose birthday it is looks increasingly concerned. The last year they just finish the song and don't sing anything at all. At this point, the birthday boy looks extremely concerned and I think asks what the deal is, at which point they close in on him to kill him. They might have pulled out knives or something, but I don't recall. Anyway, does anyone else remember this lost video and who it was made by?