Why are people so mean?

Yesterday my boyfriend was hurt and now everyone makes fun of him.
He basically hurt his balls so he was on the floor for a while and then he was carried at the nurse office. She decided to sent him back home and today he is still at home.
In the class everyone says he is so weak, he is a wimp, he over exaggerates, he's not a real guy...

I tried to defend him but not being a guy I didn't know what to say...
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+1 y
He was here although he said it is embarrassing because they are still teasing him about being weak and taking days off. It seems it will never end
Why are people so mean?
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