Glass, Anyone?

I masturbate regularly, but usually just stick to using my hand. Once when my girlfriend was over though, she said she wanted to actually see me cum, and told me to go get a glass. So off I went to the kitchen (nobody else was home), and selected a glass that was the perfect size (slightly bigger at the top then the bottom, and about an inch shorter than my erect penis), and returned with it. While I was masturbating for her though, she told me to just put the glass on my cock and do it that way. I was skeptical as to how well this would work, but after my body heat warmed up the class, and my cock secreted some juices into it, it felt REALLY GOOD. I wouldn't have ever thought about trying this, but it did work pretty good. I'd recommend it to anyone looking for something different.