When people are talking their stream of consciousness out loud, usually women and especially mothers.
"Right, I need to get some toothpaste, then I need to go to the launderette, then get some petrol blah blah yabber yabber"
"Shut yer trap ma, you're spinking again"
causing trouble. messing shit up. usually used to talk about blowing things up, property destruction and the like.
oh, we're going to go spinking. i need my spinking cap.