JOY BEHAR sure knows how to make an entrance. On “The View” yesterday, she fell straight on her BUTT while she was walking to her seat. Her co-hosts Sara Haines, Sunny Hostin, and Whoopi Goldberg rushed over to help her up. As she took her seat she said, quote, “Twenty-five years, that has never happened. Who do I sue?!” But she also urged people to take falls seriously, given what happened to BOB SAGET.