Children Can't Fly

I've lived in this house for a year, and just the other day noticed this warning label on the window in the basement laundry room:

!!! Caution !!!
Children Can't Fly!
Screens are not designed to restrain children from falling through an open window. Please take proper precautions.

Good to know. The funny thing is that this is on a basement window -- meaning it's at ground level. Literally.

Should writers of safety warnings attempt a sense of humor? I'm on the fence here . . . but if anyone knows of a job opening, I'm pretty sure I could pull this gig off . . .