My ESI friend and I are working on microscopes. I work much faster than her.
ESI: How are you doing it so fast?
Me: I just came to a conclusion that in case of the ambiguous samples I should choose whatever fits, because the general tendency should come out correct anyways.
ESI: Oh, okay.
...
ESI: So, how are you doing it?
Me: Just don't overanalyse samples like *this one*!
Some time later:
Me: I finished!
ESI: What? No! I still have so much to do! And I have my piano course in four hours and I wanted to eat something before I go.
Me: I will help you, then we're going to the pizzeria and you're buying me a margherita for my help.
ESI: Okay, but I swear you're constantly hungry and trying to set me up in buying you food.
Me: But do you want to be on time?

ESE: *hugs me from behind*
Me: ->

Everytime my ESE sister sees a small dog (or cat):
ESE: What a cute pup!!!!111!! [to our LSI dad]: Will you buy me one for birthday?
LSI: According to you every small dog is cute.
Me: And then they grow up...