This is a practice or art conducted by many females (usu. loose or slutty in nature) that dedicate themselves to perfecting and creating new ways to perform a blow job. This art is conducted usu. on a daily basis and involves fluids from the female's cunt mumbler or saliva.
I can tell by the way she sucks on that lollipop that she is highly skilled in the art of Slob Knobbery.