(Their psychiatrist accuses Booth and Brennan of an inability to talk about non-work topics)
Brennan: After a case, sometimes we have a drink … or coffee … Booth has pie; I don’t like pie.
Booth: You really should just give it a chance.
Brennan: I find it too sweet.
Booth: There! We talked about pie. Nothing to do with work.
Brennan: It is better when we discuss murder.