To deflower young virgins with ease,
Knock them out, then do as you please;
Those hymens are history,
Though how’s a big mystery
Come morning, due to the roofies.
See also this limerick’s companion piece about Bill Cosby, who used a similar tactic.
Flunitrazepam (Rohypnol)—also known as “roofies”—is a nitro-benzodiazepine drug used as a hypnotic, sedative, anticonvulsant and muscle relaxant. It has widely been referred to as the so-called date rape drug, due to its potency as an amnesia-inducing substance.