you were having banter shoot outs with eachother in RP in a public area where every one could see you .
all by standers would see you and your friend setting a bad example and if you were to get away with that other people
might think they get away with that kind of stuff as well.

Your warn stays not because we have to set an example , but because we go by the rule book.

A link will be Provided to the rules  below