It's mostly used as a type of gender affirmation. On r/Egg_IRL you'll see a lot of people asking for it after a rough and dysphoric day. It's also available as ASMR (I love it!). I think urban dictionary has an entry. Let me look it up for a second.
WE ALL KNOW ABOUT GOOD GIRL DRUG FOR TRANSFEMS AND GOOD BOY DRUG FOR TRANSMASCS, BUT WHAT WOULD WE BE USING FOR ENBIES? GOOD PERSON DRUG SOUNDS KINDA STRANGE. ANY SUGGESTIONS? "SQUARE HAMMER" BY GHOST; OBSESSING OVER A HYPOTHETICAL DISCUSSION WITH A CONSERVATIVE CHRISTIAN CLASSMATE, AND IT DRIVES ME INSANE