who is your best friend?

i am in college library. four girls from my class have spent several minutes talking about how 'best friend' is like.

i am listening to them for quie a while. time for me to speak, i think. all i want is to bring their discussion to an end. i say that it is almost impossible to draw a line that tells you who exactly is your 'best' friend. you never know until time tests your relation. i was trying to make a point saying that i don't know who my best friend is.

then a girl stands up. as if i was kindergarten student, she starts with basic explanation - "a best friend is... " she goes on and on and on.

gosh!