You've totally made me imagine that this is taking place in the prefects bathroom at a ridiculous hour of the night. When James and Lily get together, everyone thinks they're all sweet and chaste and doe eyed and lovey dovey. Remus thinks that Lily has managed to "tame" James, but Sirius is all, "Lies. They're just as horny as the rest of the population." Sirius knows they sneak off to the prefects bathroom to do what you just drew XDD
Ahh, me and my overactive imagination.
Just in case you ever come across my comments, have you ever thought of drawing a scene from the prologue Rowling wrote of James and Sirius? You appear to be a MASSIVE Maurader fan, so I was wondering if you know about the prologue, and James's affinity for the word "Elvendork." (It's unisex, apparently XDD)
One of your best abilities is how you draw hair and how you make backgrounds. You do such a lovely job on ever portion of the picture and your hardwork shows. This is very intimate and showshow connected they are