Math Humor T‑Shirt — “Σ! proof by intimidation” Novelty Tee for Students & Teachers

A crisp, no-frills tee for people who laugh at math jokes and prefer their humor dry. Clean white cotton puts the black, typewriter-style text front and center: “Σ! proof by intimidation.” It reads like an inside joke shared between grad students in late-night study rooms and professors who remember the old-school ways of convincing a crowd. Lightweight but sturdy, the shirt moves easily from lecture hall to coffee shop. Wear it when you want to signal cleverness without saying much — the design does the talking. The feel is familiar and comfortable: a classic crew neck, relaxed fit, and soft cotton that breaks in with you. It sits quietly in the closet until you need a sly one-liner to start a conversation or to wear to a seminar, conference, or casual campus gathering.

Product features
- 100% cotton solid colors; medium weight (180 g/m²) for year-round wear
- Tubular knit construction with no side seams for a clean, waste-reducing finish
- Ribbed knit collar with shoulder tape to retain shape and prevent stretching
- Direct-to-Garment and Direct-to-Film printing for crisp, durable text and sleeve/label detail
- Tear-away label and OEKO-TEX® STANDARD 100 certified for comfort and safety

Care instructions
- Non-chlorine: bleach as needed
- Do not iron
- Do not dryclean
- Machine wash: cold (max 30C or 90F)
- Tumble dry: low heat

EU representative: HONSON VENTURES LIMITED, gpsr@honsonventures.com, 3, Gnaftis House flat 102, Limassol, Mesa Geitonia, 4003, CY

Product information: Gildan 5000, 2 year warranty in EU and Northern Ireland as per Directive 1999/44/EC

Warnings, Hazard: For adults, Made in Nicaragua

Care instructions: Machine wash: cold (max 30C or 90F), Non-chlorine: bleach as needed, Tumble dry: low heat, Do not iron, Do not dryclean