There are two requirements that need meeting for your shit to be classed as a business shit: the first is that you must not be wearing a suit to begin with; at the first sign of urgency you should rush to the wardrobe and suit up. And the second is that the suit must consist of a jacket, trousers, smart shoes and a shirt and tie.
Points are awarded on urgency, details of the outfit (suspenders, cravate, tophat, bluetooth, briefcase, umbrella etc) and extracurricular activites (conference calling, checking the FTSE, smoking a cigar, reading the financial times etc)
Used only in circumstances where both people are in a hurry. By no means has any sexual connotation.
"Dammit, Logan, I gotta shit too!"
"I guess we're just gonna have to business shit it up..."
"I gotta shit so bad, that's fine with me."