(Serious) Can you floss your teeth while FSD is activated?

I'm wondering about Tesla's Full Self-Driving (FSD) monitoring system, such as whether I can I floss my teeth while FSD is active, or will the system warn me to put my hands back on the wheel and pay attention?

More specifically, I'd like to know whether the system monitors hand movements, or if it only tracks eye movement and road attention.​​​​​​​​​​​​​​​​