Grumpy Humor design. Great biker style tshirt make a great gift for grandpa or papa or for dad. This design has a skull with a knife in it's mouth with the words I Am A Grumpy Old Man I'm Allergic To Stupidity I Break Out In Sarcasm I Drink Beer I Protect My Family & I Love My Country If That Offends You I Don't Care on the back. Lightweight, Classic fit, Double-needle sleeve and bottom hem