A long time ago on a television show called Friends the character Joey explained something called "smell-the-fart acting" to Rachel, Monica and Chandler. The facial expression on those banners reminds me of that exchange.
JOEY:
She taught me all about how to work the cameras, and smell-the-fart acting.
RACHEL:
I'm sorry, what?
MONICA:
What?
JOEY:
It's like, you got so many lines to learn so fast, that sometimes you need a minute to remember your next one. So while you're thinkin' of it, you take this big pause where you look all intense, you know, like this.
...
CHANDLER:
For a minute there I thought you were actually tryin' to smell something.
