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.
by Radel-Held April 2, 2023
Get the shark finmug. 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?
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?
by St4rb4tzz June 6, 2022
Get the Sharkmug. 
A very rare shark that lives in fresh water rivers, normally small with lasers on there head to attack the pray... eats smaller fish and drags the larger fish to their mother for food
by The neatest neacheous March 25, 2017
Get the river sharkmug. by dety7 November 20, 2023
Get the sharkmug. Most people think it is a sea creature, but it is in fact a way to have sex. Only those most experienced at having sex can have shark sex because it is very deadly
by maximitis May 14, 2025
Get the Sharkmug.