Polite way of asking someone to spare you the more mundanedetails of his or her daily life.
"You wouldn't believe how many pet stores I had to visit before I found one selling self-cleaning litter trays".
"Sounds like an interesting story - perhaps you could save it for the blog?"
this is when you want to tell someone a totally gross or raunchy storybut they are in the middle of eating so you tell them you'll tell it later but they ask you to save it for never