People have been joking on Uggs since their first appearance. The easiest joke is a play on their name, calling them 'Ugg-ly' boots. "Brace yourself, Uggly boot season is coming." The second most popular joke would be in reference to white girls obsession with them. One meme has 5 pair of Uggs by the door and says, "When white girls have their friends over." They're crazy comfortable, can you blame them?
Another trending Ugg joke is that they are feminine and that men shouldn't wear them. "One does not simply wear men's Ugg boots." These boots are super soft so they wear out really quick. There are plenty of Ugg jokes and pictures gone viral of girls in dirty, sideways boots they should have retired last season. Oh well, they're Uggs!