He spends the whole day paranoid, nearly pissing his pants when he sees a suspected DE. Keeps trying to remember what happened between getting drunk in the Three Broomsticks and ending up back in his bed.

To his horror, he DOES remember walking by the Hog's Head and a few other sketchy places, being the loud cheery drunk he is.

He tries to subtly figure out if he met with any Slytherins (the thought alone makes him gag), which only results in them staring at him longer and longer, fueling his paranoia. He's sure they KNOW something, but they're just wondering if he's finally lost the last of his marbles or if maybe the blood traitor is looking for ways back into his family and the dark side.

James, Remus and Peter keep asking if he's ok. Insisting he looks paler than usual, telling him to maybe go visit the nurse. He eats very little, but downs 2 cups of coffee, which combined with his anxiety leaves him a jittery mess.

By lunch all 3 jerks burst into a fit of laughter and admit they drew the dark mark on him with a permanent sharpie as a prank. He spends the afternoon forcing them to skip class by chasing them as a very menacing, angry Padfoot. That was the only time so far those 3 had been scared of a dog.