I'm a teacher, and in the last few years at my institution there's been quite a marked change in the way student's feed back to us about our courses (not just mine, I hasten to add) - they tend to be far less understanding about time constraints, the need to cater to a range of students, the fact that sometimes we can't do everything enjoyable and some graft is needed, and above all, sometimes mistakes can happen. Instead, there's very much a sense of "I wanted this, it didn't happen, therefore it's the worst thing ever."
I work in a supermarket and I know this mentality all too well. Honestly, working on customer services you do see some of the most mind blowingly self centred behaviour ever.
Cases in point: "OMG I has to wait for 2 minutes behind someone else, every till should be open right up until you close" yeah, not gonna happen.
"OMG there's too many disabled bays! And why do they all have to be so close to the doors?" 2 things, it's a legal requirement, and put yourself in their place. So you have to walk an extra 10 feet or so, boo hoo.
"OMG the offer finished yesterday!? Thats not fair, in emailing head office" well, TROLOLOLOL
/rant




Also, the box of "Essential 12939 supplies." The box just had 12939 on it using the digital calculator type numbers, being wireframe, you could go around the other side and read that 12939 actually said PEPSI, that was amusing.