When my sister tells me to go get a life, she says that I should get myself some friends. Easy for her to say, she's not the one who got bullied all her childhood. She's not the one who always was impopular in school. She's not the one who has no one to share her interests with.
Can we be friends?
No really, this is the EXACT SAME **** I hear from everybody who's NOT my friend, so basically EVERYONE!
I use "get a life" only if there's a founded reason. Sure, everyone's having a different definition of it, so basically, you shouldn't ever say it because it's stupid. But sitting on a computer *****ing about a game that wasn't even out at the time...whatever floats their boat, but for me there's simply no logic behind that. But eh, it's not like they actually harm people. so next time, I just tell them what they do is stupid, I don't want to be an ***.
But really, if you want to explain this to people who are insulting you, namely telling you to "get a life" for no reason (mainly because you aren't like them), they WILL tl;dr you, there's simply no way they'd listen to, you know, an intelligent response. I've had that numerous times.