This has been the case for as long as I can remember... and I want to make sure it's normal.
More often than not, when I masturbate there is a soft pop noise (like the sound you get when you click your tongue-- except quieter). This occurs with the downward strokes. It does not happen if I make very slow strokes.
I don't think it happens during sex. However, it has happened before when getting jacked off by my girlfriend.
Is this normal/healthy?
I think it might happen when the downward strokes cause my urethra to open more. Has anyone heard of this happening?