A male's two most precious belongings, and the boast of his manhood. Usually when the phrase "deez nuts" is used it is to flaunt one's genital superiority to either gain a great laugh or just piss them off.
Me: Do you have any CD's of Enya?
Me: Well how'd you like to C DEEZ NUTS Enya mouth?!
Me: Do you like parodies?
Victim: uh...yeah sometimes Me: well how'd you like a pair o' Deez NUTS ENYA Mouth?!