Maybe you should just be careful what you say. Students get bullied and bullies receive punishment. Teachers are supposed to be professional and somewhat a role model.
My sister did almost that: one of her students was rude, and she said "wow your parents didn't educate you, they just fed you". Which is something we say in our family, like "you grew up in a farm"...
She didn't think much of it but the day after that the kid's mom was very furious because she "insulted a fat kid based on his weight". My (stupid, I have to say) sis didn't see that coming, and the mom was like Momzilla and forced her to publicly apologize.
Which she did by saying "Sorry if I hurt you, I didn't realize how it sounded, all I meant is that some monkeys are better behaved than you are". She didn't get fired.
She didn't think much of it but the day after that the kid's mom was very furious because she "insulted a fat kid based on his weight". My (stupid, I have to say) sis didn't see that coming, and the mom was like Momzilla and forced her to publicly apologize.
Which she did by saying "Sorry if I hurt you, I didn't realize how it sounded, all I meant is that some monkeys are better behaved than you are". She didn't get fired.