It happened few years ago and didn't really expect it..I was in a university cafe encoding my term paper. a guy sitting beside me, only barrier between us was a thin wall of the computer table. Was really busy when suddenly I noticed something about him, he was sinking into his seat, totally like it was eating him. I started feeling uneasy towards him then I found out that he was masturbating beside me. I felt nervous, decided to walk away and told the attendant about what happened. Went out of the cafe not wanting to know about the attendant confronting the perv. I rushed home nervously trying to keep it out of my mind.