There was never any supposed toleration of knocking someone out with drugs to have sex with them. That’s beyond the pail!
A pale is originally a stake of the kind which might make up a palisade, or enclosure. The uncontrolled territory outside was then “beyond the pale.” The expression “beyond the pale” came to mean “bizarre, beyond proper limits”; but people who don’t understand the phrase often alter the last word to “pail.”
brians.wsu.edu/2016/05/19/beyond-the-pail/
Regards,