About T-Shirt Design
One look at Irish I was Gaming Tee and you pretty much know what kind of sense of humor it has. Fans of St. Patrick's Day will probably get the joke first, but it is simple enough for almost anyone to understand.
You could wear it for parties, bring it out for parades, or just keep it in the normal shirt rotation. The sarcastic t shirt vibe is there without making the design feel too mean or over the top. It also fits in with funny t shirts for men that are more about a quick joke than a huge graphic. The design is easy to get, easy to gift, and easy to wear without overthinking it.