Why is it an insult to call someone's mother an astronaut?

Answer 1

it is not offensive!

Answer 2

Referring to someone's mother as an astronaut is typically used as an insult because it suggests that the person's mother is absent or neglectful, since astronauts are often away from their families for extended periods of time due to their job responsibilities. It implies that the person has a strained or distant relationship with their mother, which can be hurtful.