Of the dream I had last night.
I DON'T OWN ANYTHING!
Late one afternoon when Sirius was supposed to be in Transfiguration, he could be found wandering through the dungeons in search of secret passageways. Now why would Sirius be found here, you may ask? Well, because the map was nearing completion, and assuming that most everyone would be in a class at this time, now would be the time least likely to run into a Slytherin. If only Sirius had such luck, because he did happen across a Slytherin, a very secretive shifty sneaky snide stealthy sly Slytherin. I have to thank Remus for the thesaurus, Sirius thought. But first, he had a certain Slytherin to deal with, his belligerent brother, repugnant Regulus Black. Again, thank you for the thesaurus Remus.
"Well, well, well, if it isn't my brother Sirius."
"Well, well, well, if it isn't my baby brother Reggie."
Regulus scowled, "What are you doing out of class, Siri."
Sirius smirked, "That wouldn't be of your business, now would it brother dearest."
Regulus quickly drew his wand and shouted "Sectumsempra!"
But Sirius was swift to block with a "Protego!"
"Stupify!"
"Expelliarmus!" Regulus's wand flew into Sirius's hand.
"Watch out little brother, Furnunculus!" Just like that, Regulus was covered in boils.
"You dishonourable son of a bitch!" Regulus spat at his brother.
"Why yes, I am an SOB, Sirius Orion Black, but I wouldn't let mother hear you calling her a bitch." Sirius threw his brother back his wand, and with two quick spells was on his way.
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The spells Sirius uses at the end are Incarcerous and Silencio. Just wrote this today after waking from a very Potter related dream.