Right,
Clothes courtesy of the night custodian. You'd think he'd be used to corpses moving because of rigormortis. Fainted dead away (if you'll pardon the pun).
No I didn't drink his blood, that's what I'm after Vlad for, I don't need to add to the problem.
Now the mechanics of becoming a bat. Got to concentrate and flow into the shape. If you've got a better suggestion I'd love to hear it.

Stop distracting me! The Louisville Slugger logo was beginning to appear on my side when I finally got my focus back! Okay, think short fuzzy ugly mouse with webbed fingers (Note to self: are bats the offspring of inbred mice?). That's about got it!

Perspectives quite a bit different (keep flapping!) The clothes aren't on the floor. I wonder where they go? Come to think of it, considering the theory of conservation of mass/matter where is the rest of me?

Don't think about it! Don't think about it! The floor is too far away to lose control at this point. Keep the horizon level, good. Haven't got time to master this, I guess I'll just have to wing it. Groan, I wonder if being a vampire makes you susceptible to puns?