from the Latin root "shootnutonherface", this term means to blow your load all over a female's face, including eyes, nose, and hopefully in her hair.

male ejaculation in an adult film. adult film stars use to get paid by the number of times they ejaculated, hence "money" and the "shot" speaks for itself.

the money shot is just another name for cumshot.

1. to embarass someone publicly

2. to have sex, then pull out and give the man juice via face

An exclamation to be pronounced loudly on the basketball court whenever someone makes a 3-point shot.

The money shot is derived from the pornographic film industry. When the main actor is unable to ejaculate a second steps in with the sole purpose of ejaculating on the woman (this is why you so often see very little of the man in the final shot, so you can't tell its a different actor.)
Called the money shot because the second actor traditionally gets half the money for doing very little

In a porn flic, the one that earns the star her (occasionally his) large fee--the ugly or disgusting or degrading stuff that pays so well. In more general (and more anodyne) usage, any really important point, the point not to be overlooked.