Boredom

Once, a girl, Y, was having dinner three individuals. The three were quantum physicists, while Y was the sole lawyer.

The three quantum physicists went on and on about subatomic particles and vectors. During the two-hour long discussion, Y had perfected the art of the Closed-Mouth Yawn. After years of enduring boring lectures in college and law school, listening to her bosses wax eloquent on why her brief sucked and staying conscious during very bad dates, Y was an expert Closed-Mouth Yawner. Little did she know that all those years of practice were preparation for this exact type of situation.

Y couldn't escape. They were seated at a table with unfinished meals before them. Still though, halfway through the meal, Y was half-tempted to excuse her self and grab a cab outside the restaurant. But she didn't. Instead, she remained silent, took sips of her lemon water, and close-mouthed-yawned. A lot.

Finally one of the quantum physicists turned to Y. "Does this stuff completely bore you? Do you have absolutely no interest in our topics at ALL?"

Y was stunned. Exposed. Were quantum physicists not only mind-bogglingly smart, but also psychic?! Instead of answering with a resounding and honest "YES," Y replied, "Oh, it's just that most of this is over my head, ha ha."

The other three awkwardly laughed, and then resumed their conversation on vectors.

Apparently, Y was also not only an expert in the art of the Closed-Mouth Yawn, but also the art of Evading Answers and Tactful yet Self-Deprecating Bull Shitting.