I love this. Looks like a great hard cock too.
I had my balls tickled with an electric flosser. I was wearing boxer briefs, and the feeling of the flosser against the fabric seemed to increase the tickling. I was immediately reduced to helpless, hysterical laughter. I couldn't even beg for the tickling to stop, I was laughing so hard. Fortunately my tickler took mercy on me and stopped after a few minutes!