Lying-flat person shrugging stick figure
Palms up: the lying-flat person is shrugging, which reads as confusion without a speech bubble.
This shrugging pose shows the lying-flat person from the Office set when the picture is about taking a rest or burnout.
The lying-flat person's shrugging pose is in the confused collection; grab the PNG for a slide or the SVG if you need to scale it.
How to use: When the numbers do not add up, put the lying-flat person shrugging on the slide, in the comic panel before the explanation, or on a confused post.