This is from a t-shirt printing company. I get the irony or sarcasm, I do. Even still, I can't stand to look at this. Ahh! It's so awful. I will say though, that the "disappointment" over "disappointed" is overkill. Kind of ruins it, really. I don't think people regularly confuse the tense of disappoint, it probably would be less painful and more amusing if that line was correct. At least t-shirt companies are mainstreaming the idea of poor grammar being annoying.