Tim woke up in his bedroom in Gotham and rather promptly realized that his anatomy been reconfigured. A quick check of local news verified that it wasn't a Gotham-wide phenomenon, which meant he'd either been exposed to something on patrol or it was a Fandom thing. He'd been patrolling with Dick last night, so that was a place to start.
"Go for Dick,"
Dick answered.
"And then the nun said, 'pass the avocado!'" Roy's voice in the background. Dick was with the Titans, then.
"Hey," Girls' voice, right. Tim cleared his throat and lowered his voice half an octave. "Hey, it's Tim. You come down with anything weird this morning?"
"No, why? What's wrong?" Dick asked. "Shut up, Roy, it's Tim, he sounds weird."
"Nothing!" Tim said quickly. "Uh... getting a cold. That's all."
"Bullshit," Dick said. "Tell me what's wrong or I'm coming down to Gotham to find you."
"I'm pretty sure it's a Fandom thing. That's all," Tim protested.
"Tim. Explain."
Tim took a deep breath. "I might have sort of woken up as a girl. I guess it happens to people at my school sometimes. Goes away quickly."
"..."
"What's going on with Junior Shortpants? We need to rally the troops?"
"Is everything okay with Tim?" Oh, great, now Donna was there.
"Okay, so this is a common thing? You're safe?" Dick asked, voice serious.
"I'm fine. Nothing to worry about," Tim assured him.
"Good," Dick said, and started snickering. "Tim's school magically turned him into a girl," he told the other Titans.
"DICK!" Tim yelped. "Don't share!"
"There is nothing wrong with-" Donna began, but her voice was drowned out by Roy and Dick's howls of laughter.
"You're useless," Tim told Dick. "I gotta go."
"Wait! Take pic-"
Tim disconnected the call.
Fortunately, his father and Dana had left on their honeymoon yesterday. Tim scribbled a note for Mrs. Mac. She'd be annoyed at him skipping out without saying goodbye, but he'd never be able to explain.
He had to change his plane ticket, but fortunately he had a full set of identification under the name "Caroline Hill." Bruce had established Tim with a cross-dressing ID in case he needed to pass for over 18, but it worked for magical gender switches as well.
Back in the dorms, Tim flopped down on his bed and hoped this wore off soon. His breasts kept getting in the way.
[OPEN, yay for canon cross-dressing images and sadly, all Tim's Gotham stuff this past week is handwaved due to RL suckage.]