I once went for an interview(marketing) and the employer gave me a book on his table and asked me to market it to him. I told him and said
"Oga, this book wey dey my hand so, e dey cure hypertension. Just read am, all your worries go vanish, ifiam!". The man laughed and laughed, he almost choked on laughter. Of course he gave me the job. I hardly fail during interview because of my confidence, dress sense, friendly and out-spoken nature. I basically gist with interviewers cos of the flow, the problem lies in getting to the interview stage.
I once went for an interview, we were told to come 8:am, I was there by 7. We did not leave the company till 8:30pm, we the selected ones btw. The rest left by 5:pm. Someone even fainted, said he had not eaten any thing since taking tea before leaving home around 6:am.