Irish Aerobics Share definition Flag Euphemism for what happens when you drink too much Guinness, Tullamore Dew, or other Irish whiskey. "I had too many bloody pints last night and I was up in the loo doing Irish Aerobics all fucking night, oy!" Irish Aerobics by kitschicat March 4, 2009 0 0 Get merch Get the Irish Aerobics mug. Buy Now — $32.95 See more merch