Big Dicking means: When someone thinks they are Mr. Tough or the man, they call it “Big Dicking”. These people are way too large for their boots. A big dicker will act as a total douchebag who thinks he is able to beat anybody’s ass, when in reality he is a noodle-bitch. You tend to talk a lot when you are big dicking. (in Community Dictionary, added by Madelyn Long)