Someone that steals a line from you that you just said and uses it towards themselves.
When I say I am kind of a big deal, and then the person on the other line of the phone says the same thing I am kind of a big deal, then you would reply you know what you are a line theifer.
Stripe TheFerret is very popular on social media for his comedy & trash talking. He is very open about his view on Trump & America. He makes people laugh at people his jokes 24/7 online & points out the Karen's that get triggered on everything they see online. He even has a Stipe on his head as you probably noticed from seeing his photoshopped head on different photos online.
Cameron: "Dude do you know where Stripe TheFerret is at?"
Alicia: "I'm pretty sure he was sleeping over Alyssa's tonight so he can plow Layla again."