A mickey is a beer where you live? Hmm.
A 2-4 is a case of 24 bottles of beer (beer comes in sixpacks, cases, 2-4s, and those funny 18 bottle things), and a mickey is a 13 ounce bottle of liquor - personal serving size like. I don't know if the 26 or 40 ounce bottles have a name other than a twenty-six and a fourty.
Actually, since we pretend that we are metric over here, all the bottle sizes are given in mL now. We're even starting to get liquor bottles that have reasonable numbers, like 700 mL. Or maybe that's what wine bottles are. Beer bottles are still 341 mL, which seems stupi till you realize it's exactly 12 US ounces; then it seems even stupider...