A term used mainly by African Americans to achieve recognition of their fellow males, commonly refered to as friends. This act is also called "hollering".
"You mah young boul! We's tight! And speaking of tight, look at mah new ride, yo!" Jerwan said to Matthew, as they met in the parking lot after church.
(A word that originated in Philadelphia) A stain on one's shirt or article of clothing (either dirt, juice, or sauce etc.), that is usually affiliated with someone sloppy because it reminds the people who see it of children who get stains on their clothes at a young age.
(Gian spills juice on his shirt)
Saeed: Damn yo Gian got a youngbul stain!
(Gian is embarrased and lowers his head in shame)