When a couple is sleeping, the guy starts to cuddle the girl in his sleep, and she gets woken up by "something" poking into her side.

To sneak up on an unsuspecting woman in public or on the train and ejaculate on her. Popular in Japan.

(v) Recently discovered, the Universal Studios shark from the Jaws tourist photo op has the ability for skilled annual pass holders to go inside the shark for their photo. Most tourists will stop and go "ooooh!!!" since the majority of people stick their head into the shark or stand next to it. Inspired by a photo of Steven Speilberg in a shark (named after his lawyer, Bruce) a super cool annual pass holder known only as "nutterbutter" started the trend in 2009.

To "shark" one must go inside the shark with their legs in the mouth and hang upside down. This is an alternative to planking.

when the teacher or sub keeps circling you in class to see what your doing.

The act of keeping yourself moving or busy in order to stay awake and alert when you're very tired: Just as a shark needs to keep moving to keep breathing, you need to keep moving to stay awake and alert - otherwise you would go quiet and start to droop and slouch as tiredness sets in. Thrashing onwards like a shark will fight off the tiredness.

To have something stolen or taken from you.

One who muscles in on you whilst you are trying to pick up. Sometimes involves putting you down to make themselves look good. Usually the person who just got sharked makes a shark fin action by placing there hand on top of there head like a shark fin and walks around the person doing the sharking.