"When I'm dating someone, I have a list called 'oh no nos,'" Tom Haverford explains last night on Parks and Recreation. An oh no no offense is similar to a dealbreaker. If a woman commits an oh no no, it can end the relationship on the spot. Number three on Tom's list: "Not loving '90s R&B music." If you don't know who Ginuwine is, don't even think about dating Tom. Watch the clip from last night above and tell us, what makes your oh no no list?