This could explain the presence of certain contaminants in our water! You can muster your own evil wit to write a wicked caption or ID these frolicking fiends on this 1906 antique postcard. (If you’re tempted, add them in the comments!)

I wonder if “Miss Harris” of “Primley Hill” was properly shocked when she received it; it’s now available to collectors of strange ephemera from cardcow.com for a smidge under twenty bucks (despite the visible $2 price penciled in on the back!)