Why has no male ever sat upright and masturbated whilst sitting on the edge of the sofa?

Why don't you go to N/Korea and compare notes with their glorious leader , he looks like a real sexpot

Plenty have, dummy.

oh no you and your silly question on a stupid subject..

I always sit upright doing it. Usually on cam with a friend.

because people keep posting garbage about how if you do that it's bad for you and i am 50 years old and i used to do it all of the time and i am fine with no problems in that area

Plenty of males have masturbated and/or had sex in this position.
If you have evidence to the contrary, please reveal it.

Please stop this nonsense. Many men have safely and satisfactorily masturbated or had sex this way.

You must not watch much porn- loads of guys do that on porn videos.

stop the myth