Define Keep Messing Around You Will Be The Bad Smell In The Attic Meaning

Person 1, Yeeeeeet I'm only 16 I wanna kill a mockingbird by shoving a dog up his arse

Person2, Oi YOU SILLY BUGGERING BENT OVER SHEEP SHAGGER TALK ANY MORE SHIT ILL SKIN YOU FROM THE COCK AND LEAVE YOU IN THE FOCKEN ATTIC YA WEE BASTARD

person 1, you don't half talk shite you do

Person 2, THATS IT CUNT KEEP MESSING AROUND YOU WILL BE THE BAD SMELL IN THE ATTIC