A sex term. When someone is on their knees giving you
head, but doesn'
t want you to
cum in their mouth or on their
face. So instead you say that you'll finish yourself off onto their chest.
But instead of aiming directly at the chest, you aim your dick at a higher angle. When you
cum, some of it will travel at an arc that will allow it to gently vault from your pole and upon their face. After the first initial 'burst', you aim directly at their chest so most of your
cum lands there.
As most of it hit the target they thought it would hit, you can plead compete innocence and say it was an accidental occurrence.