I was pondering this question this morning as I went through the contents of the fridge and realised that there was a large, unopened jar of cherry jogurt that was now 10 days past its UBD.
We've been away, otherwise I'd have noticed sooner that it needed to be eaten.
I hate throwing food away, and probably wouldn't have thought twice about eating it if it were only a day or so, but 10 days? I'm scared to open it in case something leaps out and bites me
So, do you or don't you? Or does it depend on what food it is? I would happily eat cheese that was past its UBD, as long it didn't actually have mold growing off it