That cheap crap you bought when you were a kid from a 25 cent machine and after 17 minutes it breaks. Expert children say that 20% of the time during the years of 1990 and 1998 the most common disappointing 25 cent toy machine item was in fact the plastic mini-slinky. When you get older you buy cheap furniture, cheap equipment, etc. and it breaks or is flimsy can also be considered a "cheapy slinky."
I just bought this necklace yesterday and it broke already. Now I know why it cost $2.99. What a cheapy slinky!