Not a euphemism 
My buyers had their Homebuyers survey done today, the guy came just before I had to go out (estate agent had left him a key). When I got home tonight I went to the fridge for some milk and the ice-box was open - it is an integrated fridge and the icebox door has always been a bit dodgy, you need to lift it to close it, so I tend not to use it often, I just keep some frozen onions / mushrooms / peppers and ice cubes in it.
I'm not bothered that it has defrosted but would he have looked in there or is it a random coincidence? 