Mc is derived from the American fast food place McDonald's. Whore is derived from old english. Mc specifies that it is a food. A whore is a woman/man who engages in sexual acts for money. So a mcwhore is a whore on a bun with toppings served to you easily.
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."