Most of you have already heard this story but here goes: my ex had a hard time with my size and we could never make it work. He was an anal virgin. Short version: he snorted a bunch of crystal and shoved some up his ass and got so crazy-horny that he pulled me into him hard and ripped his hole.
As far as the girl and cocaine, Peruvian Marching Powder causes numbing, that's why they used to use it for a local anesthetic. I know from personal experience that this is true. Now that my druggie days are long over, sex on drugs seems pathetic and gross.