My Password Is Pi Shirt, Funny Math T Shirt, Calculus Professor Gift, Nerdy Teacher Shirt, Pi Day Tee, Math Geek Shirt
S / Charcoal
$20.45
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This black tee speaks to anyone who loves math, nerdy humor, and a quiet wink at cybersecurity. The bold white distressed lettering reads “MY PASSWORD IS THE LAST 8 DIGITS OF π,” letting the wearer slip into classroom banter, late-night study sessions, or casual coffee runs with fellow geeks. The print’s weathered look gives it a lived-in, vintage feel that pairs well with jeans, hoodies, or a lab-day cardigan. Lightweight but sturdy cotton and a classic crew neckline make it comfortable for everyday wear while the simple black canvas keeps the statement subtle and wearable. It’s the kind of shirt that starts conversations—whether at a math circle, a hackathon, or a casual meetup.
Product features
- 100% cotton solid colors — medium-weight 180 g/m² for year-round comfort
- Tubular knit (no side seams) and ribbed collar for shape retention and clean lines
- Shoulder twill tape and classic fit for stability and relaxed wear
- Dual printing: DTF for sleeves/labels and DTG for main design — crisp, detailed print
- Certified and ethical: Oeko-Tex certified, US cotton sourced, 2-year EU warranty
Care instructions
- Non-chlorine: bleach as needed
- Do not iron
- Do not dryclean
- Machine wash: cold (max 30C or 90F)
- Tumble dry: low heat
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Description
Size chart
Measurements are taken with the garment laid flat. Unisex fit, so size down for a closer fit or up for a cozy oversized look.
| Size | Chest width | Body length |
|---|---|---|
| S | 18″ / 46 cm | 28″ / 71 cm |
| M | 20″ / 51 cm | 29″ / 74 cm |
| L | 22″ / 56 cm | 30″ / 76 cm |
| XL | 24″ / 61 cm | 31″ / 79 cm |
| 2XL | 26″ / 66 cm | 32″ / 81 cm |
| 3XL | 28″ / 71 cm | 33″ / 84 cm |
| 4XL | 30″ / 76 cm | 34″ / 86 cm |
| 5XL | 32″ / 81 cm | 35″ / 89 cm |
Measurements may vary by up to 1 inch. Compare with a favorite piece you already own.
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