Stroking a female against the hair grain to test if she's gotten a close shave. Apparently sharks are slippery one way and rough the opposite.
Ah, you're from France. Mind if I do a little "shark pet" before this evening's shenanigans?
A mountain bike feature leading into a jump with a lip at a 45 degree angle. Leads to a sideways jump and requires the rider to twist his bike mid-air to prepare for the landing. The feature sticks out of the ground like the fin of a shark that's crossing the trail.
Rider 1: Dude, see me send the shark fin??
Rider 2: Totally. That was sick, bro!
The act in which a girl gives you blue balls and you are so horny that you jerk off on the drive home.
Boy 1: The principals daughter gave me blue balls so bad I had to rub one off on the way home.
Boy 2: That’s called a shark fin!
When your a disgusting junkie
I saw the shark bag whore at Shoprite yesterday she was flippy flopping all over the fish aisle.
To fish for Tweakers using a bait consisting of items that a tweaker might geek out on.
We went pilfer shark fishing at the compound with a bag of random felonious items. We also used cell phones tossed randomly for chum bait.
A male's whose Pp is so small he has to act like the king of the ocean to fill the space of smallness
Guy 1: That dude is a total Pp shark
Girl 1: I bet he has a small pp
A greedy money-lender who requires sexual favors if you are unable to pay his outrageous interest-fees.
It's not a good idea to borrow money from private people --- a lot of them are a bunch of loin-sharks.