When Dorothy snaps at Oliver, she mentions him "throwing up in the pool" at a New Year's Party at Blanche's. There is no pool on the girls' property, which is Blanche's house and where they've always lived; it is never seen or mentioned outside of this episode.
Sophia mentions the wife of St. Francis of Assisi. St. Francis was an unmarried Franciscan friar.
Blanche says that she has never been rejected, except jokingly by Weight Watchers. In "The One That Got Away" (4:3), though, she takes a second shot at a man who rejected her when they were younger.