You've come to my store, Pixie's Potions, to stock up before your next big adventure, but it turns out you're more interested in the pixie behind the counter! Unfortunately, your cock is far too big for my mouth, but I'm a sorcerer so I use Enlarge/Reduce to shrink you down to my size - but that spell only lasts a minute!! Fortunately, when I recast the spell, I have a wild magic surge that increases my size as well as reducing yours so our sizes are reversed -- you're tiny, and i'm HUGE! Plus, now I can concentrate until I cum... Time to have some fun