I guarantee it started the way all contests between men start: one guy comments--innocently enough--about how he tossed this horseshoe out of his way and it happened to ring itself around this stake or something ...
And instantly some other guy just within earshot says (either out loud or to himself), "Pfft. I could do that, easy."
But he can't. At first.
Six hours later, you've got ten guys standing around tossing horseshoes and talking about "technique" and "arc"--and someone starts taking bets...
I'm not an archaeologist, but I play one on the DS.