This glossy black ceramic mug wears its attitude proudly. A bold, vintage-style graphic reads “THE COIL WAS DIRTY. SO WAS MY MOOD,” framed with mechanic-themed illustration and distressed lettering in blue, orange, and cream tones. It feels like a smirking morning companion for someone who spends hands-on hours under the hood — a little grit, a little humor, and a firm cup of coffee to get through the job. The black glaze makes the colors pop and gives the design a slightly rugged, workshop-ready vibe. Choose 11oz for a standard coffee break or 15oz when you need extra fuel for long days in the garage. Dishwasher- and microwave-safe, lead- and BPA-free, this mug is built to withstand daily use and keeps the message sharp wash after wash.

Product features
– Glossy 100% ceramic construction in black for vibrant print contrast
– Available in two sizes: 11 oz and 15 oz
– Microwave-safe and dishwasher-safe for everyday convenience
– C-shaped easy-grip handle for comfortable holding
– Lead- and BPA-free; meets lead and cadmium safety requirements

Care instructions
– Clean in dishwasher (put the product on top rack), or wash by hand with warm water and dish soap

	11oz	15oz
Height, in	3.86	4.72
Diameter, in	3.35	3.35
Diameter (with handle), in	4.72	5.12

DESIGN & AI DISCLOSURE

Pressure Tested Co uses generative AI tools as part of our creative process, including concept development, artwork, design elements, and product imagery. Each product is creatively directed, selected, reviewed, and prepared for sale by Pressure Tested Co, with manual editing and refinement used where appropriate.

coil cleaning humor

Mug – “The Coil Was Dirty, So Was My Mood” Black Coffee Mug (11oz/15oz) — Funny HVAC Technician Gift