knockout drops

“I’ll bet she gives him knockout drops,” Tidings once told me.

German media reported that they apparently were victims of so-called “knockout drops,” which can be mixed into drinks or food.

Mitraillette tried to dose me with knockout drops again a few minutes ago—30 minutes to oblivion.

Under the sway of the most sublime knockout drops, I didn’t remember a thing.

I take it, though, that there's some play with knockout drops, or something of the sort.