The fundamental principle that whenever you're in a disagreement with someone, even though they may be 100% correct, their point will always have a degree of uncertainty due to being a 'bitch ass nigga'.
"Dog, why do you have pics of my girls feet on yo phone?"
"No, I don't"
"Bro they right there"
"Well, due to the The Bitch Ass Uncertainty Principle, you're wrong"