I think taking too much of any drug is going to fuck up your performance... but in small doses, a lot of drugs can enhance sex. I've never had problems on coke, only on heroin. I could get a hard on, but just couldn't keep it up if I was strung out and doing H every day. Taking a shot of IV coke would help... but then, 10 minutes into sex all I'd be thinking about is taking another shot! Ha. And yes, I have left chicks lying in bed, legs in the air, while I go and take another bellringer...ha.