What object/thing is normal if you have one of it but having two is super weird?

1. 2 toilets in one bathroom.
   — Sleepypiejellybean


2. Social Security Numbers.
   — page395


3. Wearing two watches at the same time. Smh
   — el_d02






4. Belly Button
   — SeriousBlak


5. Shields. Have you ever seen anyone fighting with two of them?
   — Dunkelritter


6. According to many of my friends: cell phones. I have a person phone and a work phone, I know I could merge the two but I don't think it's that weird to keep them separate. Idk if it's just my friend group that thinks it's weird or if it's a more widespread opinion.
   — BruceWayne66






7. Penis
   — AndyWho1238


8. A head, I blurted out simultaneously.
   — matrushkasized


9. Tuxedos. If you have more than one, you'd better be in an orchestra.
   — cortechthrowaway






10. Reddit accounts. If you have 1, you're probably just a casual user. Normal. Got 3 or more and you probably just got some throwaways. If you only got 2, though, you must be up to some shady shit.
    — Snookers114