Maureen tells me this is a term from tort law. If you are doing something for your employer, but leave that task to do some personal business, and then are injured while doing that personal business, your employer is not liable, because you were on a "frolic and detour."
While I will be working while we are in Rome, the whole adventure does have a bit of a frolic and detour quality to it. So we thought we'd start this blog to help our friends in the States and elsewhere keep up with our frolicking and detouring.
We leave Sunday. Between now and then I don't think we will be posting much about our housecleaning, which isn't very frolicsome.