I'm pretty sure I'll think of something more creative later.
Trickster by Willow Rosenberg
Rated: 3rd-5th Years [Reviews - 131]
Summary: After the disastrous events of the end of the Marauder's fifth year, a fuming Lily Evans decides that that arrogant James Potter and his friends need a taste of their own medicine. The straight-laced Prefect suddenly finds herself pranking her class's trickiest boys--and maybe even enjoying it. Coupled with a series of mysterious apology letters that Lily has begun receiving, it's bound to be an interesting year.
Winner of the 2010 QSQ for Best Canon Romance!
Hahah, Peter was holding his hand. Godric, I literally laughed outloud at that part. This fic is great; I'm glad it's the first one that I saw!
Oh, and the whole Sirius falling in love with James? Absolutely brillant. I literally laughed outloud at that part too.