(n.) A sexual act when the woman's vagina is so loose that you can fit a whole fist(s) inside and once inside you open up your hand really fast and the woman screams with pleasure.
George W. Bush Jr is a starburst.
"Dude, last night me and my mate Barry were watching multiple girls sucking off an elephant. It was a total starburst!!!"
Starburst- When a girl is tied to the bed legs and arms spread with her head being the point of the star and she is being teased until she squirts everywhere.