Quite a long sentence

Myself and Mrs McMuck have engineered a fiendishly cunning plan, the outcome of said scheme being that we both have the same day off (Tuesday), whereuponwhence we shall venture into town and empty out our wallets, purses and pockets in some of the capital's finest Guinness and girly drink dispensaries for as long as our wallets, purses and pockets allow, or until Guinness-fatigue, or even worse, Guinness-ass kicks in, forcing a hasty retreat.