Is it weird

I entered it into chatgpt:
No, that's not especially weird.

When you force out a hard fart, you may tense your abdominal muscles, diaphragm, pelvic floor, and throat at the same time. That can cause an involuntary grunt, groan, or even a sound that resembles a moan. Some people also make noises simply because of the effort involved or because they exhale while straining.

If it's just an occasional sound when you're pushing out gas, it's usually nothing to worry about. If you're frequently straining hard to pass gas, having significant pain, severe bloating, or changes in bowel habits, that could be worth discussing with a healthcare professional.

So the short answer: making a moaning or groaning sound when you fart really hard is uncommon for some people, but it's within the range of normal human weirdness. 😄

idk about this one

type shit