It's rumoured however that some of the lost episodes of Dr Who
actually clarify that the 'regeneration energy' is in fact a burst of timelord urine.
(
Photoshop Bitch 2014 edition,
Mon 8 Apr 2013, 19:29,
archived)
Surely
They're just taking the piss
(
Cloudane,
Mon 8 Apr 2013, 19:44,
archived)