Orange Crush alludes to some cough medicines with DXM. (The name may stem from the orange-colored syrup—and packaging—Delsym.) Poor man's PCP and poor man's X are also common terms ...

Martinak B, Bolis RA, Black JR, Fargason RE, Birur B. Dextromethorphan in Cough Syrup: The Poor Man's Psychosis. Psychopharmacology Bulletin. 2017; 47(4):1-5 ...

You go in the bathroom (butt) You take 20 pills of DXM. You just go back to class ... It would be like, "Oh yeah he needs some cough medicine" but I didn't plan on taking the normal dose.