According to the Food Safety and Inspection Service (which belongs to the United States Department of Agriculture) keeping food at room temperature for too long, will increase the possibility of bacteria creation such as Campylobacter, Salmonella Enteritidis, Escherichia coli, and Staphylococcus aureus.
Temperatures above 40°F thru 140°F creates a favorable environment for bacteria proliferation, it's called the danger zone for foods. The recommendations are wether keep the food hot (above 140°F) or keep the food cold (below 40°F).
Your dad is busy remodeling your basement. He accidentally drives a nail through his right hand with a nail gun. Therefore, you should call the police, asking for an ambulance immiedietly. If ye didn't get help, his hand might become amputated.