The car ride was uneventful for the first couple of hours but things quickly became awkward when Jon realized that he needed to use the restroom.
"Dad, can we pull over at the next rest stop? I need to use the restroom." Jon visibly flinched when the word 'Dad' left his mouth, but no one in the car was paying enough attention to notice.
"Sure sweety, I think there is a stop a few miles down the road." Jon didn't like being called sweety but he was too preoccupied with the thought of peeing while in Karyn's body to dwell on it. With his hands folded together in his lap, he attempted to covertly run a finger across his genitalia. He had no reason to question the fact that Karyn was a girl but some part of his male brain forced him to double-check that his penis was truly missing. Sure enough, Jon was destined for some time in the ladies room.
After a few minutes of squirming in his seat, the van arrived at the rest stop and the entire Black family made their way over to the restrooms. Jon forgot that he was in ta car with two other females who probably had to pee. After he stepped out of the van and stretched his back, he awkwardly walked behind Ms. Black and Megan as they passed through the ladies room door.
He kept his eyes fixed on the floor as he made his way into a vacant stall. Free from prying eyes, Jon let out a sigh and braced himself for what was about to happen. After giving the toilet seat a quick wipe, he ran his fingers under the waist of Karyn's pants and slid both his pants and panties down his legs. Curious, he leaned forward and looked very briefly at his vagina. As he did so, he laughed quietly to himself. The fear of entering the ladies room distracted him enough to forget the two large breasts now affixed to his chest.
Jon sat down and started to pee as he normally would while sitting on a toilet. The experience wasn't as weird as he expected and the difference in anatomy proved to do very little to complicate the process. When he was finished, he gave himself a quick wipe then pulled his clothes back up. Before he returned to meet the Blacks at the car, he took a moment in the stall to give his breasts a few squeezes. Again, Jon enjoyed the sight of them but he ultimately found that having breasts did little to complicate his normal routines. That said, he did wish that Karyn put on a more comfortable bra this morning because the wire running along its bottom felt like it was slowly cutting into his skin. He wanted to take Karyn's top off to get a better look but he didn't want the rest of her family to wonder why she was taking so long, so Jon settled for a quick peek down her collar.
The entire experience was good for Jon, who spent the rest of the car ride casually chatting with his new family. Thankfully, Jon had spent enough time at the Black residence while hanging out with the real Karyn to know a significant amount about her family.