Jon felt more comfortable in his swim trunks, though it felt odd having his big boobs, which grew to C cup before the swap, exposed.
Ok Jon, lets take stock of everyones changes physical and mental. I'll go first.
"I have big boobs and find men attractive. I am a bit uncomfortable showing my chest but that may just be because i am not used to having boobs as a guy."
Biff sauntered from behind his lounge chair, his firm male butt wiggling as he walked. Biffs swimtrunks were a bit loose on him due to being shorter than Jon now, otherwise he looked ok.
"Hello, uhm... I am Biff but you all know that. I am shorter and weaker and my muscles feel soft now." Biff covered his chest embarrassed and continued. "Also I feel scared and in need of comfort, feel uncomfortable being nude, and move like a girl now."
Tiffany looked fine in her bikini though her slight mustache, stubble, and hairy boobs looked odd on a girl. He also noticed that just before she undressed an adams apple started forming on her neck.
"Uhm... I am hairy now." Her voice cracked as she talked and almost sounded manly. "also I talk more manly, must be the changes in my throat i felt before stripping. And don't care about covering my body anymore. Not that I was ever shy."
Finally Yukiko stood their shyly in her bikiki, her dainty littler hands covering the crotch trying to hide to bulge from prying eyes. She blushed as all eyes turned to her.
"it's ok, you can talk" Jon said
Yuki blushed deeper. "I am Yukiko Meshida, I have a penis now and... and... part of me wants to touch it, or even stick it into someone." she blushed and turned away.