I know somebody who thinks people falling over is the funniest thing in the world. But I'm still their friend, which obviously speaks to my maturity and high levels of tolerance. I don't see the humor in it, however. If somebody falls down stairs, I just think, 'Why couldn't it happen to my enemies?' And get sad, really, because I don't actually have any enemies anymore. I did for a while, I suppose. Then they died. Fell down some stairs, actually. Kinda sad really.
A card not to send in the unlikely event of an elderly Grand Mother dying. Remember, it is always considered tasteful to apologize.
I live a blameless sort of life, and rarely have to apologize to anybody, unless they work in Human Resources, of course, and even then, the apology sounds a bit like, 'I'm sorry but I simply have no idea what it is you actually DO here!' which is less of an apology and more of a mission statement, because I think human resources is over-populated as it is, and they need to start firing people right now, and they won't, obviously. Oh, this card? This is for my next meeting with HR.