Mochi is a small Japanese rice cake and can be used to describe someone who is small and cute. To call someone mochi sexy is to say that he/she is both cute and sexy at the same time. The phrase - known in the K-pop community - originated with boy group member Park Jimin, who exudes cuteness and sexiness, sometimes at the same time.
Person A: how can he be this sexy when he was just giggling adorably five seconds ago?
Person B: he's mochi sexy. The best aesthetic.
Person B: he's mochi sexy. The best aesthetic.
by Sleepy Owl February 24, 2017
A term to describe a smol bean who is cute and soft like mochi, but somehow is incredibly sexy at the same time.
Park Jimin is sexy mochi.
by kitsutae December 11, 2016