I'd like to preface this reply by saying that I am not a fan of the Bush administration, I voted for Obama, and overall I am quite happy to see Bush leaving office. And also, I know he has had alot of gaffes while in office. However, alot of the statements in the original post are not even bad. It seems that a good majority of them would make perfect sense in context, and most of the other portion looks like it is expected of how people speak normally. Try writing down everything that comes out of a person's mouth in a regular conversation. They will have slips of the tongue, say things twice, go back and correct something, use the wrong words, etc, but it sounds just fine when you are listening because you understand the context and intonation. When transcribed, however, it looks very awkward and unintelligent. There are differences between speeches and interviews, and if he stumbles a bit in interviews, so be it. I don't care much about the grammatical problems as actual informational errors. And if he does have a kind of aphasia, then he should not be made fun of for it. And finally, I find a shirt that says "Kill Bush" absolutely appalling. Although he may be an extremely flawed man, he is still our nation's president (assuming the posters above are from America), and wearing something that advocates the assassination of a president, even jokingly, is quite offensive.
/end rant/