This can be used when your mind has a sudden glitch, and you cannot think straight (like spaniels whizzing around your head). It can also be used to discribe someone crazy or just someone retarded.
'so i was just about to... wait where was i? bloody mind spaniels!'
'i belive that man is carrying a touch of mind spaniels'
someone who buy's unessential clothing!
sabrina : 'hey look, i have just bought a bobble that matches our school uniform, isnt that great?'
Rayburn : 'fuck off fanny fabrics'
sabrina : 'ohh ok'