Recycled Olive Oil

My mother was born in Italy. She came to the U.S. and brought many old-world cooking tricks with her. When my brothers and I were little, she would rig a little grease trap to the back of each of our necks. As we'd sleep, the Italian olive oil she'd used that day in our food would run out of our hair down our necks and into the traps. She's drain the traps in the morning and use the oil again.