Handwash Puns

Our assignment was to swab each of our left hands and then use one of four handwashing protocols, (i.e., hand sanitizer, antibacterial soap, etc.) and come back two days later to observe the difference on Petri plates. So we come back and we're all looking at each other's plates and a girl asks me, "Can I see your hands? Where are they?" to which I responded, "They're right here at the ends of my arms!" and held up my hands. The entire group let out a sigh and rolled their eyes.