Reasonable Or Bullshit
A simple logic test one should apply to suggestions or ideas from certain friends. Ask yourself, "is what she just told me Reasonable Or Bullshit?".
This should be one of the guiding principles in judging any situation in life concerning friends. It's an invaluable test that will prevent you from getting screwed over again and again.
"Dude I just shacked all birdies on the back nine!!"