Happy St. Particle's Day – T-Shirt Design

Description:
Celebrate science with a twist of Irish flair in this clever “Happy St. Particle’s Day” design — the perfect mashup of physics and St. Patrick’s Day humor. Whether you're a science nerd, STEM teacher, or just someone who loves punny apparel, this design is a fun and geeky way to stand out during the greenest holiday of the year.

Ideal for Print-on-Demand sellers targeting science lovers, teachers, engineers, or students with a nerdy sense of humor, this high-resolution graphic looks great on tees, hoodies, mugs, and more.

Key Features:

• Print-ready PNG and SVG files

• Ideal for St. Patrick’s Day, science niches, and geeky gifts

• Works on both dark and light-colored products

• POD commercial use license included

SEO Tags / Keywords:
st particle’s day design, science st patrick’s day shirt, nerdy holiday t-shirt graphic, physics pun printable, funny STEM merch, geeky Irish humor SVG, science teacher shirt design, digital download for POD, clever holiday shirt