He just sat there, poker-faced, as the madcap pie-thrower set upon his boss.
"Just enjoying myself," Bloomberg answered, poker-faced and giving away nothing.
How does it feel, General, to turn your only son over to a poker-faced alien who shoots when you walk near his ship?
poker-faced Callahan showed nothing of what he must be feeling.
And if it were that of a practical joker, the poker-faced quality of it was perfect acting.