It is referring to the New Zealand homewares store Briscoes, and the fact that they have a sale almost everyday, and that it would be very unlikely for there not to be one. The iconic Briscoes Lady often presents these sales on TV.
"Will she be angry?"
"Yup, thats more likely than a Briscoes Sale."
Abdullah is a direct Quranic name for boys that means “servant of Allah”, “slave of Allah”. It was the name of Prophet Muhammd's father and the name of one of his sons, peace and blessings of Allah upon him and his family.
A place where a bunch of junk that you dont want anymore is for sale. Usually a bunch of old people come and buy it for their grandchildren. Stuff there is usually dirt cheap.
Grandma: I bought you a new shirt from a yard sale, it was only a quarter!