I’d LOVE to see a comedian as unhinged and mean as Daniel Tosh go all-in on Justin Bieber next week. But sadly it isn’t in the cards. In the spirit of all things wonderfully mean-spirited, Tosh asked his Twitter followers to roast him. There were some all-time classic put-downs. I hate to spoil the fun, but here’s a preview. The insults are like “Celebrities Reading Mean Tweets” on comedy crystal meth: