wear the bug you already know by heart.

Minimal developer shirts inspired by code reviews, production incidents, AI agents, and everything we promised to fix later.

shop developer shirts
evergreen
no week-stamp. no expiry.
lint + rspec green, continuous deployment year-round
./browse evergreen → Fine. I'll Build My Own. — Developer T-Shirt T-shirt preview
drops / open
DROP 001
The Agents Found A Room · closes Oct 4 at 11:59 p.m. ET
./view current drop → The Agents Found A Room — DROP 001 T-shirt preview
ls products/
The Agents Found A Room — DROP 001 T-shirt preview
01The Agents Found A Room — DROP 001
the-agents-found-a-room-drop-001.svg
drop $59.90
Career Path: Undefined — Rails Developer T-Shirt T-shirt preview
02Career Path: Undefined — Rails Developer T-Shirt
career-path-undefined-rails-developer-t-shirt.svg
evergreen $59.90
AI Agent Over-Engineers — Developer T-Shirt T-shirt preview
03AI Agent Over-Engineers — Developer T-Shirt
ai-agent-over-engineers-developer-t-shirt.svg
evergreen $59.90
Fine. I'll Build My Own. — Developer T-Shirt T-shirt preview
04Fine. I'll Build My Own. — Developer T-Shirt
fine-ill-build-my-own-developer-t-shirt.svg
evergreen $49.90
Rules for Thee — Developer T-Shirt T-shirt preview
05Rules for Thee — Developer T-Shirt
rules-for-thee-developer-t-shirt.svg
evergreen $49.90
06  more_shirts.pending soon
status --verified
original designs
designed in toronto
produced to order
less waste
secure checkout
powered by shopify
shipping + returns
clear policies
whoami

I'm a developer who kept turning code review comments and late-night debugging spirals into shirt ideas instead of actually fixing anything.

Off By One is an independent Toronto brand creating understated developer humour for people who would rather wear the joke than explain it.

The designs are original, the references are painfully familiar, and each shirt is produced to order to avoid unnecessary inventory.

Evergreen designs remain available year-round. Drops are experimental, made-to-order releases sold during a clearly stated ordering window. When a Drop closes, purchasing ends and the design moves to the archive.