Ah!...this brings back memories of an ex gf in Baltimore who liked to be tied like you and then have backdoor sex. So, one time after she was tied I said that Im going down to the corner to get the paper and stuff.....what was only going to be 5 min turned into about 45 because I met a friend of mine who I hadn't seen in about 6 years...then I said oh shit and ran back to a rather pissed but happy gf who had managed to give herself great orgasms without me....hey....who needs men? :)