Signing: Frustrated is signed by taking your open dominant hand and bringing it up to your check, palm facing outward.
Usage: Teaching baby to sign when he is frustrated, is a useful way for you to defuse a temper tantrum before it starts. Just being able to communicate the frustration helps them cool off. And it also provides you an opportunity to intervene and change the situation so whatever is bothering them is handled.
Flash Card: Click the link to view the Frustrated Baby Sign Language Flash Card. The flash cards are printable and available in both U.S. Letter and A4 sizes.