Know It All Brain Funny Smart Personality Gift T Shirt

This know-it-all brain t-shirt is tailored for the smart, witty, and confidently knowledgeable individual. The design features a finely detailed brain sketch with handwritten labels pointing to traits of someone who’s always ready with facts and opinions. It’s a clever way to celebrate intellectual curiosity and a sharp mind.

Presented in a crisp, hand-sketched white line art style with clean typography, this shirt has a modern and understated look. It’s suitable for casual wear at work, study sessions, or relaxed weekends when you want to show off your clever side without being over the top. The design speaks to those who enjoy sharing their smarts with humor.

This makes a thoughtful gift for the friend who’s always the go-to for answers or the family member who loves to learn and teach. It combines personality with a touch of humor, perfect for anyone who embraces their know-it-all tendencies with pride.

• 100% ring-spun cotton at roughly 4.3 oz/yd² (heather colours blend in polyester for the marled finish).
• Classic unisex cut with a relaxed body, set-in sleeves, and side-seamed construction so the shirt keeps its shape wash after wash.
• Pre-shrunk & side-seamed for shape retention
• Direct-to-garment (DTG) printed with water-based inks
• Made in Canada & USA — printed on demand, ships in 1 business day
• Machine wash cold inside-out, tumble dry low, do not iron print
• Runs true to size. Size up for a relaxed fit.