You both are about to head out on a quick ice cream date when your girlfriend’s sister spots you and comes to say hi. She asks why you are there when her sister is going to be gone all weekend. A short confrontation about her ability to be responsible ensues and you are awkwardly caught in the middle. There is always a lot of tension between the two of them. You feel bad for your girlfriend’s sister though, she is always so nice and friendly. She seems harmless even though she might be a bit.. scatter-brained.