Only one nude! As others said, it just makes me feel really naked - a feeling I like and enjoy!
I have been part of an arranged situation, where only one man was clothed. Turned out to be fun! A willing non-nudist friend arrived at my tri-level home where the garage is located on the bottom level with a door into the house where you immediately go up a set of stairs. My friend usually sees me nude, but this particular day - I wore a jockstrap. Meanwhile, a nudist/exhibitionist friend arrived to my house later. He was instructed to come into the garage, put the door down, strip off all of his clothes and come up the stairs meeting my textile friend (whom he had never met) totally nude. It was rather fun, hearing the garage door go down, door open, trip up the steps, and there was my nudist friend (totally nude and hard btw) greeting/meeting my non-nudist friend. I couldn't keep my jock on for much longer, so off it came while my nudist friend and I proceeded to masturbate in front of of my non-nudist friend for about 90 minutes! Everyone had a GREAT time!