Some people swipe the covers at night, but I don’t know of anyone except Laura who can steal the mattress out from underneath you while you sleep. Short of installing a spy-cam, I’ll never know how she does it.  Every night, 6-inches-to-a-foot of mattress vanishes on my side and reappears as a kind of ‘terrace’ or ‘balcony’ extension on Laura’s side. When questioned about it, Laura shrugs, ‘I wouldn’t exactly call it a mattress,’ she says. OK a 35 lb wool topper.  But still..