4. You Actually Tell People 'You Can't Sit With Us'
If you banish a friend to the other side of the cafeteria, or to a toilet cubicle to sit by themselves, then you're probably not someone worth sitting with in the first place. This is emphasised if it's for a very silly reason in the first place like if they're wearing a track suit or a disgusting top; you put a smile on your face and eat your food with them and be happy that you've found a human being in this world that you want to do things with.