Trying To Make A Clean Getaway

(I am cleaning a laboratory; I have wet floor signs out and a sign saying “Cleaning in progress.” Cleaning takes place when no one is normally around. I have mop in my hand and a bucket beside me.)

Biologist: “Are you cleaning the floor?”

Me: “Yes, I have a certain time slot to do it and normally no one around.”

Biologist: “Well I haven’t seen any warning signs!”

(I point to several and cleaning sign.)

Biologist: “Have you mopped the floor over there?”

Me: “Yes I have; a couple of minutes ago.”

Biologist: “Is the floor where you just mopped going to be wet?”

Me: “…Yup.”

(Glad all those years in university weren’t wasted!)