There´s a difference between not wrong and a natural way of saying things in English. Perhaps it´s what he meant in a non-direct way.
Obviously the seller won´t complain if you say "I want her" and sign that cheque straightway!
We don´t know the level of English of your circle of friends. And that´s more, in spoken English they talk that flowery/colourful way, with plenty of neologisms etc. Anyway, I am an guy open to novelties, I don´t ever say never
, I just say that isn´t the usual way. Valeu?
Sometimes today´s usage is tomorrow no-no, so many times is just a matter of time.