How to pull a prongs

You know, Moony Sirius says, when Remus is about to open his mouth. I didn't come here to drink with you he confesses, turning his face so that his grey eyes are staring right into Remus' green ones. Didn't you? he asks, hiding the I knew it that is dancing in his mind. Sirius hums and puts the half empty bottle on the bed, beside him. I've come to pull a prongs on you.