Because I felt like it

Sounds Like Fire!

   The TARDIS whirred to a stop, on the other side of Pompeii from last time. "Let's go, let's go!" Adan cheered. The Doctor huffed. "Patience, I have to make sure we-" the TARDIS cut him off by producing a map with a cheerful "bing!"

"I think we are all set. Where to first?" Loki asked. "No! Hold on! We can't walk around Ancient Rome with a dragon!" Adan made a very confused expression. "Why not?" The Doctor sighed. "Because, they are human and massive fire breathing lizards scare them!!!"

"Adan is not so massive, he's actually quite small." Loki commented. "Oi! I told you this isn't my real size! And what's a lizard?" The Doctor face palmed, forgetting on a planet full of dragons they didn't have a term for "lizard" , and mentally asked Idris what to do.

She laughed and revealed a smoke filled white chamber, filled with glowing pink neon lights for dramatic effect. "When did you install that?" The Doctor muttered, but he shrugged and decided to test it out anyways. "Right Adan,this should take care of your dragonishness!" Adan raised an eye ridge. "Doctor, what is it?" The Time Lord beamed. "A change your species thing! You can be temporarily human! And unlike a Chameleon Circuit,  it's not painful!"

"But I don't want to be human!" Adan whined. "They taste gross!" The Doctor and Loki exchanged confused glances, but decided it's a dragon thing. "Alright, if he can't be a dragon and, understandably, doesn't want to be human, make him a Time Lord." Loki suggested. "That's brilliant!" Adan trilled.

"Not a bad idea. Alright Adan, it's A.C.Y.S.T. time!" The Doctor shouted, pointing dramatically to the chamber, again nearly hitting Loki in the face. Adan ran inside then asked, " A.C.Y.S.T.?"

"It is short for A Change Your Species Thing." Loki explained. "Bingo! Let's see how this works!" Adan froze at the Time Lord's words. "Wait you haven't tested-" The a Doctor pulled a lever on the TARDIS consul and the chamber filled with pink smoke and strobe like lights.

When it finished The Doctor threw the door open, coughing at the density and thick scent of rose perfume from the pink smoke. Adan stepped out cautiously, not used to walking on two legs, and the Doctor and Loki gaped at the sight before them.

The Time Lordified dragon was nothing short of a model, and wearing naught but a dragon scale loin cloth on his waist. He looked to be around seventeen and had copper red hair that flowed to his shoulders in waves, perfectly tanned skin, and bright amber eyes. The Doctor blushed and ran off to get Adan proper clothes.

"Here, take these, there is a closet over there you can change in!" The Doctor threw the ball of clothing he had grabbed at Adan and gestured towards a door, blushing all the way up to his ears that stuck out like rosy rocket fins. "Why can I not just go like this?" Adan wondered.

"Humanoids wear clothes. Now go over there, close the door and put them on." Loki ordered. Adan cleared his throat in both embarrassment and discomfort at his sudden lack of fire breathing. "I don't really know how..." He admitted. "Idris can show you! Now go!" Adan gave them a concerned glance, as neither seemed to be feeling well due to their faces growing steadily more red and acting strangely. "Alright, I will... how odd..." Adan muttered, closing the changing room door behind him.

The Doctor and Loki sighed, relieved the dragon had finally gone to put more clothes on. "Oh, I thought he'd be younger... and fully dressed! Idris, why didn't you warn us?!" The Doctor exclaimed. The TARDIS made an apologetic noise, but they all knew she was really trying not to laugh.

"No matter, I'm just glad he listened to you, I was worried we'd have to spell it out for him." Loki said. The Doctor nodded his agreement, causing his fez to fall off and the Time Lord to scramble to catch it with flailing arms.