To shark is to put one's dick inside of a nose, this is usually done in rehab when people are having withdrawals and just want to snort anything, so they would snort each other's cum.
I was chillin' in my house when a drug addict hopped in from my window and sharked me.
You bastards came from that urban dictionary explained page haven't you.
A shark is a cold-blooded fish that is found all across the world and is a carnivore, it's also included in "shark tank" where people pitch their ideas to the "sharks" to decide if they're good or not.
A term used to define a sexual activity performed by getting head from a gay guy with braces then ejaculating into his nose as the blood pours onto his mouth giving a sense of euphoria.
ok yeah no, I just had to make something for the people who saw the definition of urbandictionary and decided to look up shark for the sexual meaning, you know what shark really means (an aquatic carnivorous animal group)
random guy in a friend group: hey did you know that shark is a sexual term I found in the definition of urbandictionary?
that one bystander: no one gives a fuck, go get some women