"...a sweet ol' girl/ bout the sweetest lil girl in the whole wide world/ makes the toughest homeboys fall deep in love/ once u have a roni you will never give up/ special kind of girl that makes her daddy feel proud/ the kind of girl that stands out in the crowds..." ~ Bobby Brown
The nickname/Name Roni is basically a smooth cool guy who can adapt to any environment & is really down to earth & is very sociable & persuasive and is highly respected by others.
"Roni", or "Tenderoni", is a slang term used when a person is describing an underage male/female lover ... also known as "jailbait".
The term was widely popular in late 80's music, and used most often in rap and hip hop lyrics. Bobby Brown and Vanilla Ice both had popular songs in that era that used the word "Roni" to describe their "Sweet young love".