Mr. & Mrs. Johnson are at the bank when an armed robber bursts in. Realizing he forgot his mask, the robber makes everyone lie face down and warns them not to look at him or he'll shoot.
Sure enough one stupid customer sneaks a look, and BAM! the robber shoots him on the spot. The robber then asks if anyone else had seen his face.
Johnson, continuing to gaze intently at the floor, shouts out "I think my wife got a glimpse."