don't get it

my sister told me that i need a life when she told me i decided to say something funny.
so here goes

sis: you need a life
me: what do you mean i already alive

we both laugh

sis: good one

i know what she means you need a life. what's she means is that a person that's hanging out with friends and other things. you guys know that too. the first time when she said that to me i did not get it. but she told me anyways. that's how it goes. but i still don't get it when someone tells you to get a life. you will be wondering or confused or both. so when someone said to get a life you will wonder why would you tell me to get a life when i'm alive already. just kidding. hope you like it.