A Korean sexual practice that involves the eating of the ass (항문을 핥는) followed by a sensual clarinet glissando performed by the ass-eater (갈색 혀를 가진 사람).
Mike: Dude, why does your clarinet smell so weird?

Jun Ho: Brooo, my bad, J and I have been really into browning reed lately. I'd tell you to try it, but you're not Korean so go fuck yourself.
by brownreed August 18, 2019
Get the browning reed mug.