locking myself out

So I don't often leave my keys places
SO I am at Sam's doing my Sat morning errands run while Jeff watches the kids.
Well I am loading the groceries in and close the back door and take the cart back as I am coming back to get in the car I can't find my keys then I look into the trunk of our hatchback wagon and there they are....
and would you believe that the rest of the car is locked....
had to call Jeff to have him bring all three kids to bail me out and still had to go to walmart for the rest of my shopping so I walked over there (it is next door) and started shopping while waiting and then we all had a nice family lunch at Subway...ha ha ha
can't believe I did that...but fun to have a family lunch out...