A lunch twin is when two friends are becoming best friends but don’t wanna date so they become more than friends and a lot less than a couple. So they become lunch twins and they scream at each other anywhere examples of this would be in face time calls ,middle school, and high school hallways.
LT1: hey have you seen my Lunch Twin??
Person: no?
LT2: LUUUUNCHHH TWIIIIN!!!!
LT1: LUUUUNCHHH TWIIIIN!!!!