There are certain tell-tale signs that your best friend is a twin, or you're stuck between having two best friends who are twins. Speaking from personal experience, these are just a few of the biggest indicators that you're the extra twin.
1. Each twin is more than ok with being very codependent with you.
2. You can have full conversations in inside jokes.
3. You understand the twins when they speak very unintelligibly together.
4. They've made you watch every Mary-Kate and Ashley movie, plus The Parent Trap.
5. They teach you intimate and awkward family traditions so that you're officially in the family.
6. You understand all of their inside jokes.
7. You call yourself their triplet.
8. You know their dance moves to their favorite songs.
9. You can harmonize (badly) to your favorite songs together and they give you the solo since they can't decide which twin would get it.
10. People forget you're not actually one of the twins.
