A fake ass rapper who can't spit any bars. He didn't come from the hoods and doesn't know shit about the culture. He pretends he knows how to rap, and he's cool, but everyone is secretly laughing at him behind his back. He doesn't pull girls, he can't ball, and he goes to a private school. A guy who calls himself this has no respect for the genre or culture.
Asking someone if they suck dick, usually used several times in a row in different ways to shy away or anger people
Person 1: hey brah, suckdickbrah?
Person 2: what??
Person 1: suckdickbrah? white dick brah?
Person 2: huh
Person 3: LOL SUCKDICKBRAH???
Person 2: goes offline
To be a Slick-dick is to send a gift to your loved one that coincidentally arrives with near perfect timing. Not something that you planned, but nonetheless something that enhances the overall experience for your partner.
In this instance the appearance of being slick would be unjustified, thus you're a Slick-dick.
Stuart sending an Easter egg making kit to Susie for her April birthday made him a "dick". Sending rollerskates that arrived just as her existing plans unravelled made Stuart a "Slick-dick".