a very high offensive word to say to an irish or scottish man while he is taking a shit. they get extremely insulted and angry, and may result in hostility.
white guy on the toilet: " hey you scott you got any mother sweet corn in there?"
irish/scottish man: "oi what tha fuck did yew just say lassie? ill kill yah!"
white guy: "oh shit, i really pissed of this mick and scott, i better bounce.