I keep telling them all I intend to get my revenge when I get old and dribbly and then they have to look after me! My DS counters by saying by that stage I wont know what they are doing to me so I'm going to be locked away in a nursing home.
Now don't all be horrified. It's been a standing joke for ages and whenever I have a senior moment, DS pats his pockets and says, "now where's that list of nursing homes?" They really are the best of kids and when needed, they are there in a heartbeat.