The entrance of a woman's vagina when shes wet, in most cases used as an insult.
Roberts a poonslide for stealing my baked potato
Kim lost my motorola razr what a fuckin poonslide!
Poonslide = a serious thread on FB when the conversation deteriorates to a sexual free-for-all
We were talking politics in a facebook group, when all the sudden we were all talking sex... it was a total poonslide.