Time Lords' troubles

"I demand to know, how you got in!" The Doctor repeated grumpily.
"I regenerated," the woman kept shouting. "I can't find my tattoo!"
"Grandfather," Susan said. "You know the Corsair!"
"Yes, the Time Lord who ran away from the initiation after one look at the Untempered Schism," the Doctor smirked.
"I heard you think you're special," he continued. "With your Ouroboros destiny. Whatever that is."
"I'll do it - I have that kit from Marco Polo's expedition."
***
Smiling, the Corsair admired his Ouroboros tattoo.
"Thanks, old man."
"Still the first body, Doctor?" He continued. "Don't worry, you'll get something better eventually."