Lois attends her 20th year reunion at Salve Regina College in Partial Terms of Endearment. Peter is reluctant to attend at first, cautious about Lois running into old boyfriends. When Lois meets Naomi at their 20 year reunion, Peter is shocked and pleased when Lois admits they experimented sexually. When Naomi tells Lois she has a proposal to discuss later after the reunion, Peter assumes she is talking about three-way sexual intercourse.