It is quite a necessity to have a good memory to prevent awkward situations, such as the one I had recently, described below.
She: hi..do i noe ya?
Me: no you don't
Me: but I think you are cute
Me: hahah... no lah
Me: your friend told me you can help with planning for me taiwan trip...
Me: thing is, I forgot which friend
Me: ok ok, I'm in NUS comp engineering. you know any friend there?
She: kevin tai?
Me: eugene ng? don't think it's him..
Me: I think it's a her..
Me: shit, this is bad..
She: nopez..not eugene ng..mine's eugene lek
Me: ok, this is getting awkward.
Me: I can authenticate myself :$
She: ah huh..
She: you are??
Me: is that right?
Me: ok, I am Frank, a friend of zqueen's thru exchange program in Canada..
She: think i heard your name b4 also
Me: phew... authenticated!!