Maybe:

Mac and Joe are all uncertain, Lightman is intensely watching them all, and Methos is leaning back in his chair watching them all with some amusement.

"I don't know how The Game started," he said lightly, "but I do know why it's called The Game."

Lightman considers: Pierson is telling the truth, casually, but MacLeod and Dawson are stunned and unnerved.

"Because there are rules, there are winners and losers, but most importantly, because the only way to not go insane is to not take it too seriously. Relax people."

Dawson laughs and sits back in his chair as well. "Okay, old man. I'll quit worrying."

MacLeod looks betrayed for a moment, and then relaxes himself. "Who says you're not insane?"

And now Dawson and MacLeod were both ten times harder to read than before because their thoughts (and therefore their faces) weren't thinking about the subject on hand, but thinking about their friend and whatever The Game was.

"What's The Game?" He knew capital letters when he heard them.

Pierson smiled sweetly at him. "A game, of course. You're not invited."