Sam was an employee of the Munchie Company. Sam's job was to drive an ice cream truck and sell ice cream from the truck. One day the truck stalled, and Sam asked Ted and his friends to push the truck. They agreed, and Sam gave each of them a can of whipped cream as compensation for their help. Ted's can exploded and injured his eye. When sued by Ted, Munchie Company argued that Sam was acting outside his scope of employment at the time he gave Ted the can of whipped cream.

Is this a valid argument?

Explain.