Its already been done.
About a year or so ago after a 2 hour drive to the airport I realized I'd left my wallet at home. All I had was my luggage, my paper ticket and a few dollars in my pocket. Someone was meeting me at my destination that could cover my necessities so I decided to go ahead and see if I could get on the plane. I didn't have any trouble boarding but they did check my bag and I was selected to be searched prior to boarding.