Definition---
An entire Sunday day which passes where absolutely nothing transpires; A miscreant day which you will never remember; A Sunday which is sullied away to pyjama wearing and not bothering to lift ones arse away from the sofa for more than a toilet visit. The phone does not ring and your mobile is not blessed with anything other than a full battery.
Example---
Dan: How was your Sunday? Get up to much?
Garath: Good mate cheers, I had a sod all Sunday.
As I was lyin' in the gutter, picking up me teeth, the spirit of St. Peter appeared before me.
"Sean ya wanker," he said "Repent o' your wicked ways, or sod off."
Then he gobbed in me eye and turned back into a lamp post.