In my part of the world, Mrrzy, it's "you and whose army?"

Shrek is voiced by an English-born Canadian actor, Mike Myers, whose family emigrated from Liverpool to Scarborough, a suburb of Toronto, when he was a child.

George MacDonald Fraser quotes "you and whose army" in one of his short stories about life in a post-war Scottish infantry regiment, collected in one volume as The Complete MacAuslan. If I recall correctly, Shrek has a Scottish accent, and Myers (or the scriptwriter) may have added the insult because it is a typical bit of Glaswegian repartee.