Mutex Mug - This Mug Is a Mutex (15 oz)
Mutex Mug — This Mug Is a Mutex
A mutex (mutual exclusion lock) exists to make sure only one process touches a shared resource at a time — you acquire() it, use the resource, then release() it so nothing else can barge in mid-operation. This mug enforces the same policy. It's yours until you're done. Nobody else gets to reach for it while it's held, and interrupting a hold is exactly the kind of bug this whole design exists to prevent.
Take it to standups, sprints, or wherever you're the only thread that should be touching the coffee supply. If someone else recognizes the diagram on the side, they've been burned by a race condition too, and you now have something in common.
Product features
Glossy white ceramic, comfortable C-handle
Clean black-and-blue hand-drawn artwork, crisp printing
Microwave-safe and dishwasher-safe
Available in 11oz and 15oz
Lead and BPA-free
Care instruction
Dishwasher-safe, or hand wash with warm water and dish soap
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