Vickys mom Betty and her boyfriend Sid (George Segal) announce their engagement and upcoming wedding in St. Martin and invite the entire family to join them. But when Sid goes too far with a stripper, Dave wonders whether or not to tell Betty and risk losing the free trip. Kenny goes on a date with an ex-boyfriend of Hillarys so Dave has an awkward conversation with him about gay safe-sex, while Hillary worries she may have a knack for turning men gay.