I could never stress to anyone enough: Once you put something on Facebook, it is out there for everyone and anyone to see, and sometimes, you can't take it back.

Now a 19-year-old kid who made a comment on Facebook last year is starting to realize exactly this. Justin Carter was still 18 years old in February when he got into an argument with someone over an online video game called "League of Legends".

According to Justin's father, the story goes like this:

Someone had said something to the effect of 'Oh you're insane, you're crazy, you're messed up in the head,' to which he replied 'Oh yeah, I'm real messed up in the head, I'm going to go shoot up a school full of kids and eat their still, beating hearts,' and the next two lines were lol and jk."

Well, the other kid's mother saw the threat and called the police. Police arrested Justin, and he has been in jail since March 27, according to his father. He's charged with making a terroristic threat and faces eight years in prison.