I’d like to nominate The Fallacy Of Solipsistic Specialness, wherein the speaker offers an excuse that somehow only applies in his or her special little corner of the universe.
‘I’m sorry I’m late… gee, the trains were really bad this evening’. Hm, yeah, but I had to get here using the trains as well, and I actually I live even further away than you, and, um, I was here on time. In fact, I got here about ten minutes early, so I wouldn’t keep you waiting.
‘I’d would have come and supported that thing you worked yourself into the ground to organise, but, well, I have kids and you know how it is…’. Sure, except that there were people at the event who have just as many kids as you, or even more, and who perhaps have even fewer resources than you, but they somehow worked things out and managed to be there.
‘I’d love to pursue that business idea, but it’s just not practical now, what with all my other responsibilities and the need for a steady income’. Okay, although plenty of other people, with all the same responsibilities that you have, and more, have somehow managed to get their act together and actually follow this plan.
And so on.