The pink one

"What does the pink one do?" You ask and Kruya takes the small bottle out of the case. "It represents the ox's testicle and it basically makes you grow a penis. I know it sounds weird, but haven't you ever wondered how it would feel like? Just chug it down and you should grow a massive penis within seconds. Don't worry, it'll retract and disappear within hours."

Both you and Pearl are bright red from hearing that and you can't stop thinking about cocks on girls.