1. To ride straight off of an obstacle such as a ledge and drop to the ground without ollying. Fairly dull and unstylish, and not really a trick (more of an accident).
2. To ride from the top of the ramp clean over the edge - over the coping - and push the front of the board down so that you meet the transition (curved section) of the ramp.
A grab trick involving holding the nose with your front hand while your legs split as if walking. In theory, the more 'steps' you can take while in this position the better the trick is, but rarely is it possible to take more than one or two. Originally an air trick invented by Tony Hawk, then developed into a flatland trick, the 'ollie airwalk', by Rodney Mullen - although technically it's a 'split kick' since Rodney doesn't actually have time to walk. Now hardly ever seen on street.
A trick performed in the air while turning the opposite or 'unnatural' way to the direction of travel. When travelling in the direction your toes are facing (toeside) rotating frontside 180° or more makes the trick an alley-oop. Conversely, when travelling heelside, rotating backside 180° or more is an alley-oop. Usually this occurs on a half pipe but is also sometimes seen in park skating on hips, quarter pipes and transfers. Any trick can be performed alley-oop but most often you will simply see frontside alley-oops and backside alley-oops.
A crooked grind without the back truck in the air; it is pushed down beside the obstacle again, similar to how the front truck is pushed down in a smith grind.
An invert with a backside grab, invented by Dave Andrecht.
A half impossible to nose casper. The skateboard is upside down with the point of the nose on the ground, raised at an angle and held up by the skateboarders back foot which is hooked under the deck. The skaters front foot stands on the underside of the nose. In this position the skateboarder can stall or slide along a suitable surface before flipping out of the anti casper position.
A stall with both skateboard trucks planted evenly on the lip or object. Like a 50-50 grind without moving.