Harry was late to potions like always so Snape had to do something sexy about it. He tore off the young boys clothes with a promise to make him think about his actions and with his hands cause obviously a promise doesn't have much real clothes ripping abilites. He was enraged and turned on to find a huge tattoo of his own face on the chest of the Boy who Lived, proclaomeing everlasting love to the oily professor.
:COme here you obnoxious child and let me love you down!" Severus mouthed into Harry's ever pulsating liverwurst flavoured phallis as it trembled with a delight and rapacity only satisfied by the semi-often pampered and delicately chapped lips of the potions master.
"Ah" said harry unimaginatvely as he felt the deep burn of sexy snape's expert lovemaking.
"Fuck me with your baby fiungers!" breahted snape trhoutgh mouthfuls of penis juice as Harry's tiny phallanges snuck in through Snape's open barndoor and upset the chickens which flew the coop as the older man came. A lot.