Jerk Shark 

Much like a shark, this person under-exaggerates their ability at certain games. The jerk factor is added by the fact that this person does this to friends, not unsuspecting pool hall drunks.

Richard invites Greg over to play Guitar Hero, saying that he is only on Easy mode. Greg comes over only to get his butt whipped by someone who can 5 star his way through hard.

Under normal circumstances, Richard would be a shark. Because he did this to a buddy, he is a "jerk shark"

Jerk Shark by CHRISGRE January 1, 2009

Jerk Shack 

An establishment that claims to be a massage parlor or massage therapy center, but ultimately specialized in performing masturbation (Hand-Jobs, Happy Endings) following the massage. This service is typically performed by a female masseuse on a male customer. But can performed via male on male.

Hey Bill, what was the name of that jerk shack that you went to last weekend?

Jerk Shack by thumpr033 April 26, 2011