Slipping a blackout-inducing drug, usually a benzodiazepine called Rohypnol, into someone’s drink without them noticing, with the intent to incapacitate them.
Per Wikipedia:
Nicknamed “roofies” or “floonies”, it is widely known for its use as a date rape drug.[6][7]
Slipping a blackout-inducing drug, usually a benzodiazepine called Rohypnol, into someone’s drink without them noticing, with the intent to incapacitate them.
Per Wikipedia:
Oh, yikes! Thanks for the explanation.
And the -ing form would be roofieing, with roofying an acceptable alternative.