Just Here for the Serotonin Toddler T‑Shirt | Cute トドラーTシャツ

This playful toddler tee features a happy brain character in a party hat with the phrase “Just here for the serotonin.” Perfect for little ones who bring joy everywhere they go, it’s a fun mix of science humor and cute cartoon style. Great for birthdays, playdates, preschool photos or as a gift for kids of doctors, therapists and psychology lovers.