Famous quote from Payday when you try to locate the dealers panic room but the two thugs who are chillin down the stairs don't allow you to get upstairs.
"Stay back bro! S-stay s-stay b-stay back bro ! You're not allowed past this point."
It is a literary term used to burn someone hotter than my mixtape. This term ascends beyond things like "Your mom gay" or "Your daddy a lesbian." I did it to my friend once. My friend has level 2 cancer.
Friend:"Wanna get a pizza?"
You:"You're bro's a hose."
Friend: *Dies