An extremely esoteric nickname for cocaine. In the original lyrics to the
Cole Porter classic showtune "I Get a Kick Out of You", the second verse begins is "Some get a kick from cocaine". As the years passed, that was changed to "Some like the
bop-type refrain" so kids could continue to put on "Anything Goes" as a high-school musical.
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.)
Example:
Chris: I'm sick of referring to cocaine as "
yatch". It's gone too mainstream.
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.