So you're a coward and have to hide because you're worried you'll be teased for who you are…
Mmmhmm…
Hey…if your friendships hinge on whether or not your friends know what you jerk it to, I'd consider getting some new friends.
Grow a spine man. If you have no shame about what you do, who cares? If you squint at the thought of others knowing, DON'T POST IT!
Because there is no in between these things. You either out yourself or get outed. How you choose to live is how you steer your course.