Also found in: Dictionary, Wikipedia.
you and whose army
A childish response to a threat, implying that an adversary is not powerful enough to carry out the threat alone (hence the need for an "army"). A: "If you don't leave, I'll make you get off this playground!" B: "Oh yeah? You and whose army?"
you and whose army?INFORMAL
People say you and whose army? to tell someone who has threatened them that they will not be able to do what they have threatened because they are not strong enough. `I'll make you sorry.' — `Oh yeah? You and whose army?'