Story: once a boy was smoking at airport.
girl asked: ek din me kitni cigarette peete ho?
boy: bachpan se roj 4.
girl: agar ab tak zindagi mein cigarette pe kharch kiye hue paise bachaate to saamne khadi hui bmw car tumhaari hoti.
boy: aap cigarette peeti hai?
girl: no.
boy: to kya wo car aapki hai?
girl: no.
boy: thanks for advice, wo car meri hi hai.
moral: zyaada lecture dene se beizzti bhi ho sakti hai. :p