It wasn't just the boob. It was a disgrace from start to finish. The crotch grabbing, lyrics about crack and "take your clothes off", women prancing around in lingerie, and the rest of it. Every single performer made at least one contribution to the baseness of this show.
I'm no prude, but it was an embarassment.
Sounds like the Super Bowl halftime show was just a big "FU America" message.