Some things are better left unsaid according to some wise folks. It saves hurt feelings and potential shame. This is why we can legitimately wear insulting and offensive T Shirts without any shame or recourse and of course all in the best possible taste!
Claim the design was a gift from your grand mother whom you do not want to offend. You may even get sympathy, so buy now online to get free international delivery. You will love the reactions, so choose your bad taste T Shirts and bad taste friends.