I Know Stuff T-Shirts
Description: Assert your expertise and capability with our "I Know Stuff and Do Things" slogan tee, a witty and confident addition to your wardrobe! 🧠💪 Whether you're tackling a project or simply navigating through life, this tee serves as a reminder of competence and readiness to take on any challenge. Wear it proudly and let the world know that you're someone who gets things done!
Description: A confident little owl who knows a thing or two and isn't afraid to show it. A funny and playful design for smart people, students, teachers, geeks, nerds, know-it-alls, and anyone proud of having a brain full of useful and wonderfully useless knowledge.
Description: I'm a teacher. I know things about stuff. A funny quote that uses deadpan humor and deliberate understatement to playfully describe the knowledge and expertise that comes with being a teacher. This witty line turns a simple statement of professional pride into a vague and absurd joke that teachers can relate to. A funny gift idea for teachers, educators, and anyone who enjoys funny quotes, sarcastic humor, and clever jokes, perfect for Teacher Appreciation, birthdays, holidays, or Christmas.
Description: That's What I Do, I Fix Stuff and I Know Things - Funny Car Mechanic Saying
That's What I Do, I Fix Stuff and I Know Things - Funny Car Mechanic Saying T-Shirt
by Lady Butterfly
$24
Description: Whether you are a mechanical, electrical, chemical, aerospace, technical or civil engineer you are definitely a smart person who knows things. Or maybe just a smart aleck who likes funny sayings. Perfect gift for your favorite engineer who digs math, science and all things tech. Do you have an engineer husband or wife, dad or mom? For that awesome geek friend with an engineering degree that works in software development.
Description: A rectangular design with rounded corners on a black background. It features stylized wrenches at the top and bottom. The central text reads "I FIX STUFF" in cream and red, and "I KNOW THINGS" in blue and red, with horizontal lines accentuating the first line.
Description: Are you a college or university professor? Whether you teach science, math, history, philosophy, business management or english literature you are definitely a smart person who knows things. Or may just a smart aleck who likes funny sayings. Perfect gift for a teacher going back to school or returning to campus classrooms in the fall. Why not for any instructor, faculty member, associate professor or the college dean. Great for a parent brother or sister who also teaches classes or just got a PHD doctorate degree.
Description: A flat, cartoon-style depiction of a yellow excavator with a black base and tracks. Below the excavator, large white text reads "I DIG", followed by smaller white text "AND I KNOW STUFF", and finally "THAT'S WHAT I DO" at the very bottom. The background is solid black.
Description: A bold white text design on a black background. The top curves with "THAT'S WHAT I DO" and features five stars and a wrench with crossed tools. The center reads "I FIX STUFF". Below that, "= AND =" is centered. The bottom curves with "I KNOW THINGS".
Description: Wear your expertise with pride with this ultimate I Fix Stuff and I Know Things design, the perfect anthem for automotive mechanics, backyard tinkerers, and blue-collar legends. Featuring a classic, rugged retro varsity block style, this apparel honors the hard-earned knowledge of diesel mechanics, carpenters, and DIY enthusiasts who can repair absolutely anything. Whether you're turning wrenches in the garage, fabricating in the metal shop, or looking for a standout Father's Day 2026 present, this top is a premium professional statement. A meaningful gift for a handy husband, grandpas, engineers, and anyone who lives for the maker movement. Great for casual shop wear, weekend projects, or proving you're the smartest fixer in the room.
