When a girl's pussy is extremely wet before actual intercourse. An abundance of fluids secreted in the vaginal canal before actual sexual activity. Also known as starter fluid.
Yo Stanley! What's poppin Rizz? That biotch came over my house prewet dog. I felt it when I slipped in like butter on the first try. I didn't even have to use spit. That shit was good fashizzle. Stanley replied, "Yo my girl Jennifer is prewet everyday all day that's how you know she's got the goodie goodie son. Yo you need to wife that shorty ASAP. You feel me!" Rizz replied "roight! roight!."