#hc that sirius doesn't know it's reg he just hates the idea of james fooling around with slytherins

[where-is-vivian]

James, running late to class: Sorry, professor, I'm late. My alarm clock didn't go off.

Everyone in the classroom staring at him:

Professor Flitwick: Nice of you to join us, Mr. Potter.

James, walking to his seat next to Sirius:

Sirius, staring holes at the back of James' head:

Professor Flitwick, turning around to resume his lesson, but just before he adds: I'd advise you you don't mistake your uniform with someone else's next time you're running late.

James, clueless: What? *then, whispering to Sirius* What?

Sirius, shooting daggers at him: Prongs. Who's Slytherin tie is this?

James, blinking, and slowly looking down at the green tie he's wearing, before looking up sheepishly: Haha, you're not going to belive this—