A successful masturbatory session lasting less than 10 minutes, typically performed between other daily activities and before dates or other outings to brighten one's mood, release sexual tension, quell boredom, kill time, calm the nerves, get a healthy glow going, or for any number of other reasons.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Masturbating right after lifting weights

When you wank, fap or materbate purely and simply because it's the only way you'll fall asleep