Do I have to use a specific facial expression for *jeez*?
Yes! Because *jeez* is an interjection, your facial expression provides all the necessary context. Depending on the situation, you can look annoyed, surprised, overwhelmed, or relieved. The sign itself is just a vehicle for the emotion you are expressing.
Is this the only way to sign *jeez*?
No, there are a few different variations. Some signers might fingerspell the word, use an initialized 'G' or 'J' handshape, or simply use an exasperated gesture like shaking a loose open hand. However, the 'A' handshape variation shown in this video is very common.
Can I use this sign in formal situations?
Because *jeez* is a slang term and a highly informal interjection, it is best reserved for casual conversations with friends, peers, or family members. In formal, academic, or professional settings, it is usually better to maintain a more professional vocabulary.