The reed of a musical instrument such as an Oboe, Clarinet or Saxophone that was once inside a living creatures Anal cavity.
Anal Reed

Faggel: Hey Bi-Boy do you want to try out my Oboe?
Bi-Boy: Ya sure (Takes Oboe and plays a couple notes)
Faggel: Oh and by the way I stuck the reed to my Oboe that you're playing with up my Anal cavity.
by ElBarrioDeMuchoDias March 22, 2012
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