When someone makes up a new word or expression to describe something, and that word or expression is just so sublime and succinct that it is quickly adopted by the mainstream or the sub-mainstream, necessitating its inclusion in the Urban Dictionary.
Beyonce 'coined the term' bootylicious to perfectly describe a rounded butt (or Big Black Ghetto Arse, depending on how you look at it). Well done Beyonce. Sorry I can't do the little dash above the 'e' in your name but Robert's explanations are crap.
Sohm-Yung Ho 'coined the term' Resident Cunt to perfectly describe... um... the resident cunt.
A Chinedu is normally the best. An amazing friend,courageous, brave, strong, he brings all of that to the table. Normally Nigerian. Good at football and good in all subjects. An all round great person