From the shop Pink Ink Art T-shirts and Gifts:

This design is so cute, no one will mind if you really are grouchy. Funny look at seniors sometimes, crabby dispositions, complete with an arty crab. Great gift for seniors. PinkInkArt original!
Sizes: S,M,L,XL,2XL,3XL.
Colors: Black,Cardinal,Navy,Military Green,Red,Royal,Brown,Charcoal

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Celebrate National Grouch Day with this hilarious Grouchy Crab t-shirt.