Sneaky GM/DM tricks
On the heels of Deo’s post, sometimes at my table I will pause the action. I’ll ask a player who in the middle of a do-or-die planning session to hold their thought. Then I’ll loudly roll a die behind my screen, look at it puzzlingly and then at a different player for a second or two with the same puzzled face, and then ask the original player to continue.
Usually the rolls mean nothing.