Have the person smile or show his or her teeth. If one side doesn’t move as well as the other and seems to droop, that could be a sign of a stroke. Have the person close his or her eyes and hold his or her arms straight out in front for about 10 seconds. If one arm does not move, or one arm winds up drifting down more than the other, that could be a sign of a stroke. SLURRED SPEECH. Have the person say, “You can’t teach an old dog new tricks,” or some other simple, familiar saying. If the person slurs the words, gets some words wrong, or is unable to speak, that could be sign of stroke.