ISTJs, also known as the Inspector or the Logistician, are individuals who possess a strong sense of responsibility, practicality, and order. While they may appear calm and composed on the surface, there are certain things that can annoy them. Here are some common annoyances for ISTJs:

1. Disorganization: ISTJs value structure and order, so they can become easily annoyed by chaos or disorganization. They prefer to have a clear plan, follow rules, and see things in their proper place. Messy environments or people who are constantly late or unprepared can frustrate them.

2. Inefficiency: ISTJs are highly efficient and focused on getting things done in the most practical and logical way possible. They can become annoyed by inefficiency, whether it's in the workplace or in personal matters. Wasting time, procrastination, or unnecessary complications can irritate them.

3. Lack of follow-through: ISTJs are reliable and committed individuals who value keeping their word. They can become annoyed when others fail to follow through on their commitments or promises. They expect people to be accountable and fulfill their responsibilities.

4. Disregard for rules: ISTJs have a strong sense of duty and respect for rules and regulations. They can become annoyed by individuals who consistently break rules or disregard authority. They believe that rules exist for a reason and should be followed.

5. Emotional outbursts: ISTJs tend to be more reserved and private when it comes to their emotions. They can become annoyed by people who display excessive emotional outbursts or drama. They prefer a calm and rational approach to problem-solving and may find emotional displays unnecessary or disruptive.

6. Lack of attention to detail: ISTJs are detail-oriented individuals who pay close attention to accuracy and precision. They can become annoyed by people who overlook details or make careless mistakes. They value thoroughness and expect others to do the same.

7. Unreliable behavior: ISTJs value reliability and dependability in themselves and others. They can become annoyed by individuals who are inconsistent, flaky, or unreliable. They prefer to surround themselves with people they can trust and rely on.

It's important to note that while these annoyances may be common for ISTJs, individual preferences and experiences can vary. Not all ISTJs will be bothered by the same things, and some may have a higher tolerance for certain annoyances than others.