BOO – Element of Surprise Funny Halloween Science Shirt Posters and Art Prints

Get spooky and scientific with this clever Halloween mash-up! “BOO” takes the form of a periodic table element—atomic number 31, symbol BOO, weight 10.31—because the true element of October is surprise!Bright neon-green design that pops on dark shirtsPerfect for teachers, students, scientists, and Halloween loversGreat conversation starter for trick-or-treat or classroom funLightweight, classic fit; great gift for science geeks and pun fansScare up some laughs and celebrate 10.31 in style! 🎃👻

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