The pink pineapple in 'Steven Universe' is such a fun detail! In the show, it's part of the Gem world's surreal, pastel aesthetic, and while it looks deliciously juicy, it's definitely not something you'd find at a grocery store. The series plays with food as a symbol of fusion and hybridity—think Garnet's heart-shaped waffles or the Cookie Cat allegory. I love how even mundane objects get this magical twist.
That said, real pink pineapples do exist (thanks to genetic modification), but they're more rose-gold than the cartoon's neon pink. The show's version is pure fantasy—like if a cotton candy cloud fruited. It fits the theme of 'unnatural' nature in Gem society, where everything feels slightly 'off' in the best way. I'd still totally try one if they magically appeared!