I remember watching what I think was a skit from either an anthology series or something that had shorts inbetween (or after) the main show. [THIS IS VERY ROUGH AND MAY BE WRONG IN A LOT OF PLACES]
It started with a cereal and several men of differant eras (one was a spartan warrior, one was a cave man, etc) taking turns stealing it from the former one who had it. Eventually landing in the possetion of a little girl. She then thanks them and I think 2 of the names were "Uncle Spartacus" and "Uncle Ugg" (The caveman one). Then a huge screen turns on and it says the city needs the help from the "Manly Men", they then do a short musical number poking fun at the "Macho Macho Men" song, even starting with "ooo, aah, ooo-ahh-oo, MANLY MANLY MEN!" The little girl doing the "staying alive" finger to the top to the bottom diagonal line move. I cannot remember what happens in the main plot, but It gets to the point they were all trapped and need the caveman to help them escape as he was the only one outside it. After the villain was thwarted, the little girl got the prize in the cereal box only to have it break almost right afterwards, the spartan warrior one then says who it msut of been/is responsable and they do their dance and set of for what I assume is vengance.
I think it may have been from Eek The Cat or a short from Nickalodeon's old cartoon showcase show (the predecessor of Random Cartoons). As I have rewatched all of Freakazoid (where I thought it was part of from it's style of humour and cause the Spartan like uncle makes me think of The Huntsman with more vinigar).
Thank you to any and all who can help.