Rhythmically thrusting one's erect penis into the mouth of a horizontal lady whilst straddling her face (saidlady is ideally less than 5'1" in height).
I met this girl on hinge and was riding the tiny horse before I knew it.
When something unexpected happens that makes you feel absolutely ecstatic, implying that the event made you so happy that you released your load over the whole neighbourhood.
"My pc is working again dude, I'm about to paint the town white"