the yellow ones are smaller than the red/black ones - i think the yellow ones stretch to like a 12 or a 10 and the red ones i think stretch to an 8..? maybe.. its about twice as big as the yellow ones.. jsut depends on where your ears are now...
yeah, people were gauging their ears all the time in High School, I graduated in '06 and it was EVERYWHERE. I don't understand it either personally, I saw this guy at a work conference over the summer, his earlobes hung down to his darn SHOULDERS lol. and I went to school with a guy that wore golf tees in his ears. it looks painful!! and the over-dramatic sizes look dumb IMO but to each their own :)