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Calc You Later Hat

Rule Of Math Seems Easy You're Doing It Wrong Hat

Math The Language Of The Universe Hat

Happy Pi Day Celebrate Your Irrational Side Hat

Pi-neapple Pineapple Pi Day Hat

Oh Crop Hat

You're A Piece Of Shit And I Can Prove It Mathematically Hat

Funny Pi Day March 14th Quote I Get Real Be Rational Gift Hat

I Eight Sum Pi I Ate Some Pie And It Was Delicious Pi Day Hat