cultural reference help

[calimac]

What is this "Ya-sa-so-po" joke that Jon Stewart has been making for the last few days?

Comments

[supergee.livejournal.com]

Ronaiah Tuiasosopo, who apparently was the creator of Manti Te'o's fake girlfriend.

[kalimac.livejournal.com]

OK, thanks. Sure enough, then, this follows my rule: If I don't get a cultural reference, it's about sports. I'd heard of the college football player with the fake girlfriend, but I hadn't followed the story any further than that.