Since the interactions between Jack and Jen are increasingly being played with a lot of comedy, it’s easy to forget sometimes about evil Jack. That’s why I love it when the show reminds us occasionally. This is a very short, cute scene where big brother Mike notices how close Jack and Jen seem to be getting, and he doesn’t like what he sees:
All Jack and Jen are doing is having a conversation about work, but the way they are talking over each other and making little jabs at each other clearly marks their intimacy. Mike just stands there listening, with his expression growing more and more forbidding. When he breaks in on them, saying hello to Jen, she naturally invites him into their banter, saying that Mike needs to make sure Jack gets a cab after his appointment. When he says deliberately that he thinks Jack is a grown man and can handle getting a cab by himself, she still doesn’t notice, and just gives a little scoff that I find very cute.
Then when Mike says, “Since when are you his mommy?” it finally breaks through to her what Mike is thinking. Then she suddenly seems very young—a little shamefaced, a little defiant, like a teen caught sneaking out. Mike says he’ll see Jack in his office and (with meaning) that he’ll see Jen later. Jen says “I’ll call you,” and then mutters, “Don’t call me.” We don’t ever see that later conversation, but it’s clear that Jen isn’t going to be easily talked out of her friendship with Jack.
This is just a small, incidental scene that does a lot. It’s important to have these reminders of Jack’s reputation, because it reminds us of how unusual this friendship is, and raises the stakes for Jack and Jen.