Last summer I was out doing yard work and this couple with gray hair walk by with a 11/2 yr old in a stroller. So I said "Ohhhh how cute, how old is your grandchild"? They said "this is our daughter"......inside I gasped, feeling like a complete idiot. I think they sensed my embarrassment, so they said "we had this one later in life". I told them "I'm so sorry", while I put my foot in my mouth.