What does Bracket Eight mean?

Bracket Eight meaning in Urban Dictionary

Bracket Eight may be the correct solution to give an explanation for intimate act labeled as "69ing" or "sixty nining." The man's cock switches into the woman's lips together with man's tongue gets into the woman's vagina, which means guy may be the bracket. The girl is represented by the "8" because both extensions for the bracket penetrate the openings associated with eight "8," the mouth and vagina associated with woman.{8 (The real bracket is not utilized on Urban Dictionary)