a rookie
A rookie is someone you call when you're trying to be cool and your phone autocorrects 'roomie' into 'rookie'. It's a fake term used for your fake friends.
My roommate called me a rookie because I spilled coffee on his shirt. He was trying to be cool.
My best friend is a rookie because my phone autocorrected me.
I called my fake friend a rookie because he said he wanted to be my roommate.