Post ejaculatory sensation in the body which can come shortly after male ejaculation. The sensation lasting no more than a second, feels like a small shock or jolt to the body, and is usually followed by post-cum a few minutes later a.k.a (the dribble)
short and light aftershock the body feels after you've shot a load.
Bong terminology. The residual smoke in the bong and it's piping after toking the main hit. Usually, your lungs are too full to take in the aftershock. Checking the density of smoke in the aftershock is a good way to see how good your hit was, but that is pointless.