A verbal high-five from one guy to another. Generally directed at an enticing (smooth) or sexual (nice) action.
TJ: "Anything exciting happen last night?"
David: "Well at one point we crammed like ten people into a car. Naturally I had a girl on my lap because of this. She was wearing a skirt, so I got my diddle on."
TJ: "With everybody else in the car?"
David: "Hells yeah!"
TJ: "Smooth and nice"
when someone makes a smooth transition from failblog to leet in less than 5 seconds.
The story as it's told.
Five: I was watching squirels mate, and I rode my bicycle into a parked car, and I looked around for witnesses, and I got back on my bicycle, and I rode around the corner to safety to set my broken leg.
Everyone: Smooth Sherlock!