2 definitions by Donny boohhasdabshjsadjasda...

from Blackadder/Slackbladder, meaning total numbskull uncapable of human thought and not able to perform normal bodily function without most of it running down their leg.

Genral term by Irish people, maybe in surprise, or in trying to hide themselves, for example. If you kick a sack with an English bloke in it he will go "Woof" but if you kick a sack with an Irish bloke in it he will go "POTATOES"...