I think using that horse hair instead of the hair recommended in that old potion book wasn’t a very good idea… Or was it?

– “I feel strange, something is happening between my legs… ho… my head is spinning…”
Passes out.

The mixture was so bright, bubbling slightly yet cold with a raspberry taste, I couldn’t help but drink it. I am an experienced witch though. After half an hour, my assistant made the mistake of waking me up with one of my vivacity potions.

– “Um, assistant, I think you’re going to have to help me with this!”
Points to her crotch and winks.

I don’t know how long the effects will last, or even when these runes will disappear, but it will be a long night for my assistant.