The Doctor and Clara are deserted on a strange, hot desert planet. They strip down to their skivvies but there's no escape from the beating of the sun. The Doctor has a bright idea to cool down their core temperature by activating their thermoreceptors....by puking! The Doctor hurls bright vivid blue puke all over her body and smears it in to cool herself down...and the on the way she starts getting transformed into a dirty puke slut...she's so turned on and wants Clara to do the same....