Roseanne calls Ronnie "a jug". She is a wealthy, somewhat snobbish cousin of theres who at first Roseanne seems to hate when she finds she is coming over to pay her respects about the lose of Roseanne's father., Al Harris. 20 years prior to the series the two had a argument (or misunderstanding as Jackie puts it) . Roseanne was suppose to be a bridesmaid at Ronnie's wedding but according to her, Ronnie thought that she wasn't "good enough" to be one. Roseanne called the wedding a "pretentious, overblown piece of crap!"
They eventually make up and realized how much they love to mock each other.