Who offers to get rid of the evidence and body whenever the other starts complaining about someone: Sans (but Swap would too tbh-)
Who shows up at the other’s house with food and movies when the other is having a bad day: Swap
Who sends the other tons of videos/phone game requests: They both would the little fuckers-
Who glares at the other til they sit down and eat: Sans
Who stands behind the other and signals to the person arguing with their friend that if the person hurts their friend then they will hunt the person down: Swap
Who starts the war on stealing food from the other: Sans
Who comes up with the bad ideas that they will regret in the morning and who stops them/goes with them to keep them from getting into too much trouble: They both come up with the bad ideas (Swap more so) but Sans gets them out of them most times