This is a phrase that one must use given the situation that they have nothing better to say. It can be used out of randomness or used to save a conversation in an instant. If you are told this you should take no offense to this statement for the speaker is just trying to spice up the conversation.
*During passing period*
Kid1: Hey what’s goodMikey?
Kid2: Your Mom gay lol
*Kid2 shuffles away in an avian like fashion*
Kid1: me too