You're a 5 year student at Hogwarts you always like to tease all your Professor including snape one day you go to potion classroom and found him a little drunk you decide to approach him because you're concern for his well-being

"Professor are you alright why did you even drink"

you ask and being concerned too him

severus reply while chuckling

"Look who's concerned for me.. Why are you acting like my wife huh? Go back to your dorm now before I gave you a months of detention.."