Get them all liquored up, and have some erotic fun in the shower, put some shaving creme on her rug and tell her to shave it, because it turns you on.
works great until they wake up in the morning itching their snatch..then you hear about it for a few days until the shit stops itching.
most chicks shave down there anyways, or at least have the decency to keep their hedges somewhat trimmed, chicks that don't probably have crabs. (which would be 90% of Californian women)... yeah .... watch out.