A short statement that expresses a general truth or principle regarding (A) a guy's "sausage", or (B) someone's being an a**h**e to everyone.
Ethan Couch's over-indulgent father made a dicktum to officials at the school, offering to buy the entire joint just so that he could be in control over how his spoiled-brat "Little Prince" was treated during classes.
A woman’s or man’s mind falls victim to a male because of his devil penis (The dick so good it ruined a life) That person fell dicktum to that man and now he can get away with murder and they’d still wanna fuck him one last time.