An aquatic sea creature who is often known as an ocean predator. It's diet mainly consists of fish, and they can be really scary to swimmers. If not provoked however, they will not hurt you. Just stay away from them if you see one.
You came here to see the sexual definition though, didn't you. If you want to find that, search up land shark instead.
POV: you go on urban dictionary and see the shark definition and wonder ‘does it mean that?’ And look it up and might see this, well kids, a shark is a sea creature, not a sex position, so STOP WONDERING.
Lil bob: *goes on urban dictionary and sees the shark definition*
Lil bob: ok imma look it up!
Uncle bill: now ther lil bobby u ain’t lookin’ up tha definishin beca you saw tha stuf on the urban dictionary now r ya lil squart?