Kids are mean. But apparently, they're picky about whom exactly they're mean to.

A new study by Kansas State University researchers found that kids have more sympathy toward peers who have attributes that seem out of their control, like asthma or poverty. They're more hostile to classmates who have conditions that are thought of as controllable, like obesity or aggression.

In other words, it's Patty's fault if she's fat, so bring on the Fatty Patty jokes. But Bobby's resemblance to Marilyn Manson is something he can't control, thus we must be kind.

We're inclined to start going off about "kids these days ... ," but really, if Internet comments are any indication, people old enough to use a computer are even bitchier versions of their tiny selves.