Yellow- bellied

Today I tried to buy someone a sweetie snake. The long foamy fruity chewy ones. So I went to WH Smith and picked up the one with the biggest grin. I took it over to the counter where a women with scraped back hair and a serious gullet was sticking boxes onto other boxes. After five minutes of carefully ignoring me, she eventually looked up and squawked 'Yi cannae hev wan hen, howma ginny weight it?' and before my very eyes she yoinked the dangly confectionary out of my hand, rolled it into a ball and plopped it into the bin.