Sam is in the middle of picking up an attractive woman named Suzanne in the bar, when he's telephoned by another former lover named Denise who wants to see him as soon as possible. So many women, so little time. He chooses to see Denise, while he puts current prey, Suzanne, on hold. However, Denise doesn't quite want a liaison: she tells Sam that he is one of two possible men who fathered her newborn child. Sam is shaken at the news, and swears to God that he will forgo sex forever if the child isn't his. He decides to change that to three months, which is like a lifetime for Sam. He quickly finds out that he is not the father, and is relieved. He is just about ready to head off for an evening of debauchery with Suzanne when Carla reminds him of his vow to God. Because of Carla's strong Catholic background, she convinces Sam, with a little unwitting help from Woody, that a vow to God is something one should not take lightly. Sam asks for advice from Father Barry and Frasier, the former who won't let Sam off the hook, and the latter who suggests he funnel his sexual energies into other endeavors. It doesn't help that another old flame, Rachel Patterson, comes by the bar on a short layover she has in Boston. Sam isn't sure he can make it through the evening with Rachel let alone the three months. A hotel room accessory may make him come to a conclusion about his vow.
—Huggo