A not-so-smart girl (who, for once, wasn't blonde) was once interviewing for a job. The interviewers realised in a couple of minutes that she wasn't exactly the brainiest of the lot, but didn't want to call the interview off without giving her her due interview-time. So they're asking her simple questions to kill some time.
First interviewer: So, how old are you.
Girl: (starts counting on her fingers, on both hands. After a minute...) Twenty-seven years, sir.
Second interviewer: (realising the questions aren't silly enough for her...) And how tall are you, ma'am?
Girl: (takes out an inchtape from her bag, measures herself up) Five feet six inches, sir.
At this point, the interviewers realise they've hit rock bottom.
First interviewer: (exasperated) OK, just tell us your name please!
Girl: (chants for some time, then lights up and says) Neha.
Second interviewer: (astonished) What were you muttering to yourself?!
Girl: I was just recalling that song - Happy birthday to you, happy birthday to you, happy birthday dear... Neha!