"Undress."

"What?" I couldn't believe my ears. And neither could Kate. We both stood there, not sure if Nathalie was being serious or if this was some kind of joke we didn't get.
"You heard me right. Undress." She looked nervous herself. Bright red face. Her voice not as full with authority as you'd expect. "I just want to see you naked once. You got me all interested."
Kate seemed frightened "Uhm....I....I don't know if....we should."
"Come on, it's no big deal. We've all seen a guy and a girl naked before, right?" Nathalie really wanted us to do this.

So instead of trying to protest, i simply did what she asked of me and undressed in front of my seminar leader and a good friend of mine. There I stood, fully naked, my dick hard again. Nathalie looked like she enjoyed the view, she stared intensely at my dick and bit her lip.
Kate finally gave in too and undressed. She did it more slowly though. Her top was the first thing to fall to the ground, then her pants. Seeing her in just her underwear got me all excited. Then she unclasped her bra and let it fall to the ground, her big tits basically jumping in joy for being let free. After her bra, she finally moved to her panties and slowly pushed them down, bending over and unwillingly giving me a great view of her full ass. She covered herself with her hands after her last piece of clothing dropped to the floor.

"Come on, hands off. I want to see all of you", Nathalie said, smiling. It was as if she enjoyed Kate's embarrassement. Kate moved her hands to the side. I moved a little to get a better view at her pussy. I was beautiful. And wet. This whole thing must have gotten her quite excited aswell. Nathalie noticed this too.
"Wow, looks like you both are liking this a lot," she said.
"Okay, is that it now? Can we go?", I asked. I just wanted to end this embarrassing moment for both me and Kate.