One-Shot
Meaning: Something that can be sexual and done on the spur of the moment, but only for that one time and not repeated moments after its done!
I enjoyed a few of these one-shot deals myself with willing women!
Example: Back in their early days this playful couple would do a exciting one-shot deal, then go on with their normal day! It was later told that the guy was only Good for that 1st CUM shot and went blank after that and the women would only do it once because she was worried that her hubby would come home!