People aware of this, wanting to demonstrate their cultural refinement and speak about cocaine, all while avoiding eavesdroppers and self-incrimination, replace the technical name of their drug of choice with "Bop-type Refrain" (or simply "Bop-type", though the later option brings with it a tremendous risk of losing your audience.)
Kevin: How about "Bop-type Refrain"?
Chris: What the - oh, I get it. I didn't know you were a devotee of musical theater.
Kevin: Eh, I know the Sinatra version.