Chandler effect

The desire to crack a joke, or make an immature / sarcastic comment, especially during an inappropriate moment; named after Chandler Bing from "Friends"

A prime example of the Chandler effect:

The Interviewer: So let’s talk a little bit about your duties.

Chandler: (nervous) My duties? (Trying not to crack a joke) All right.

The Interviewer: Now you’ll be heading a whole division, so you’ll have a lot of duties.

Chandler: (trying not to laugh) I see.

The Interviewer: But there’ll be perhaps 30 people under you so you can dump a certain amount on them.

Chandler: (really try not to laugh) Good to know.

The Interviewer: We can go into detail…

Chandler: No don’t I beg of you!