"Forget it"

"Forget it"... some people use it so often in their conversations. Do they really want to end the conversation and 'forget' the topic when they say so? Do they really think the other person is stupid enough not to understand any further explanation?Or... do they just like pretending, that they are complex persons?
Well you might be wondering here comes the scribblers's over analytical opinion again...But it really irritates when an argument or discussion is abruptly stopped with this "Forget it" note.I strongly believe in speaking until the people with whom am arguing either convince me that I'm wrong or agree with me or atleast he/she should make sense in their stand.
So here are few lines dedicated to all those who love the word "Forget it".
If you are complex, simplify.
If you are frustrated, relax.
If you really need to... then move on.