Annoyingdogs that are small enough to be carried in a woman's' purse. These dogs range form quite and pathetic to loud and obnoxious, to ankle bitters, and should be put out of your misery when ever possible.
A wiener dog is not a pocketrat, wienerdogs are cool.
vagina in your pocket, to have snatch in your jeans. beaverin your sack, chocha in a compartment, porn on a mobile device such as iPods, iPhones, iPads, Andriods, PSP
UK slang: "I've got nothing." or "Nothing came of it."
I think it comes from something like 'couldn't even get a drink at the pub, just left with some stolen mustard pacs'.
Did you get the (job/girl/money/news)?... Nah; "pocketful of mustard."