The old spring walking down the stairs trick just never gets tired. Springy is a great stocking filler and will keep you entertained for hours as it gently slinks from hand to hand and walks down inclined surfaces...
Until you eventually give in to temptation and try to straighten it all out. Please don't do it! It's a mistake! Just enjoy making slink from hand to hand, walk it down some stairs and sloping surfaces.
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