Frank invents the "Gun Shot," a firearm that blasts liquor directly into a person's mouth. Mac and Dennis attempt to steal and "improve" the idea into the "Shot Gun," leading to a rivalry over the patent.

"" is the eighth episode of the fifth season of It's Always Sunny in Philadelphia , which originally aired on November 5, 2009. The episode follows the Gang as they attempt to capitalize on a local merchandising convention by creating products branded for Paddy's Pub. Plot Overview

At the merchandising trade show, the Gang presents a poorly edited video pitch for their products. While Charlie triumphantly announces that someone wants to purchase the Kitten Mittens, the Lawyer arrives to reveal that he now owns all the profits. Mac tries to invalidate the contract by eating it, but the Lawyer reveals he has hundreds of copies, leaving the Gang in disbelief as they realize they have been outmaneuvered once again. Charlie Kelly Charlie Day Dennis Reynolds Glenn Howerton Ronald "Mac" McDonald Rob McElhenney Dee Reynolds Kaitlin Olson Frank Reynolds Danny DeVito The Lawyer Brian Unger

The group also develops the "Dick Towel," "Paddy’s Thong," and "Paddy’s Egg" (a green, hard-boiled stress ball). The Legal Battle

Charlie and Dee attempt to blackmail the Lawyer after stalking him, only to discover he is going through a messy divorce rather than having an affair.

Charlie introduces "Kitten Mittens" (often misspelled "Mittons")—small cloth footwear for cats meant to quiet their "stomping around".

To secure patents and protect their ideas, the Gang repeatedly harasses (played by Brian Unger).