Jump to Edging, Exhibitionism, Exposing
Edging
Masturbating for extended periods of time with the intention of refraining from orgasm and ejaculation is called edging. Edging is a practice of many bators, and it can take great skill to maintain a level of arousal for multiple hours that does not crest over into cumming. Hard to do, especially for boys like me who focus more on loads of loads, rather than extended edge.
Exhibitionism
The practice of showing yourself naked and/or engaging in sexual behaviors in public or open spaces where you might be discovered.
The threat of getting ‘caught’ has never done anything special for me, and my appreciation for guys who live so boldly is far more about their comfort with their bodies and their entitlement to their sexuality. Exhibitionism is often seen as reliant on the unconsenting discoverer or observer, i.e., behaving in a way they know will be shocking or offensive to someone else and where that threat to others is the point.
General public nudity or public edging and masturbation, when performed for the enjoyment of the naked masturbator (instead of performed to impose on others – consent is always key) is awesome. It takes balls to gain that sort of comfort with yourself and that should be applauded.
Look at this fukkin masturbator! 
Bate and smile bro
See Also: This Mall Showoff Kid Will Make Your Day, Public Monday Masturbators: To The Great Outdoors!
Exposing
While it might sound like it’s similar to exhibitionism, exposing is the deliberate practice of showing all of oneself during bate sessions. Some masturbators find it greatly arousing to position themselves so that their genital areas are as open (or exposed) as possible, and situate cameras or observers so that the entire underside is visible – penis, balls, ballback, and hole – simultaneously.
Exposure can be an enormously liberating thing in a way that even traditional masturbation is not by itself. In the days of Tumblr, a great number of men would host blogs about exposing, or go to great trouble to film and photograph their own exposure, sometimes even in the outdoors.
I’m personally fond of this style of bate for the ways that it models and displays physical confidence or a freedom from self consciousness surrounding socially unacceptable body regions. Men who edge and bate this way have nothing to hide and are unconcerned about the reaction of others to their bodies and pleasure.
See Also: The Primal, Animalistic Magic of Autofellatio