Reference to the cult comedy from the Wayans Bro,s, 'Dont be a menace while drinking your juice in the hood'. Meaning:/ preparing ones self to approach a member of the opposite sex in order to impress. Making sure you've not got shit in your teeth etc... Checking your hair and breath, your general appearance, inorder to come across slick and cool. Nonchalant.
Originally refers to Denzel Washingtons performance in malcolm X, at the beginning of the film when he gets his hair straightened and his pimp outfit, in order to impress the ladies.
'I'm about to get into my Mack Daddy Denzel Mode you know Yeeeeeaaaah! watch me move up these honeys.'