When shorts or pants put on in the morning that are tight enough to negate the need of a belt, but then midway through the day, stretch and fall off of the waist, a mid-day stretch occurs.
The point in your work shift you stop being as ...productive as you were earlier (slacking off, flirting with that hot chick in customer services, etc). Usually the last hour, hour and a half.
Classy Employee #1: Dude, we got an hour left. We're in the home stretch now!
Classy Employee #2: Wanna go outside and smoke plants?
The act of intercourse where two fingers are placed in partner's booty hole and then spread apart and one must yell in the hole. If you hear an echo consider your attempt a success.