You'er going to need sandpaper (the lower the grit the better) and a piece of tape to secure it around your shaft.

Today's jerk off instruction session is going to be excruciatingly painful and quite messy but that's what gets you off, isn't it?

We will see if your opinion on that changes once that cock has been rubbed completely raw.

Let's hope the sandpaper doesn't cause any permanent damage, right?

Let's be real though, I don't give a fuck how much pain you are in or how much you are suffering.

In reality, I kind of enjoy watching it.