To hit a homerun; first introduced by Atlanta Braves thirdbaseman Chipper Jones via his July 25th tweet: "Mike b and jhey go yicketty! The roadrunner went mammo! And the Bravos have a winning road trip" and then clarified a later, "yicketty means homer! mammo means big bomb"
The Yanket is an invention of Peter Griffin (from the Family Guy TV series) that he created to masturbate in secrecy in "Underage Peter".
It comes with decoy arms that can hold items such as a remote or a beer. There are Yankets for various locations such as the store, sporting events and on the job. Chris finishes the episode using a Yanket, as Stewie observes that he masturbating out in the open previously.