I live/work near a major train station, and I see guys milling about like this in the summer: Freeballing in loose shorts -- likely for comfort while travelling -- and end up getting a boner waiting to transfer and can't do anything about it but just let it fly.
The best is when I see guys walking to/from the station with luggage in their hands, dicks pointing straight out and bouncing left and right with each step...they can't do anything about it and just have to keep going with the hope it'll subside
