Transcription
A Tweet by "☾ luna" @Lunarnaut_M:
I told ren faire guy I had no money for axe throwing and he told me I could throw for free if I gave him an ear.
I laughed until he gestured to this corner
[A photo of a woman in elf cosplay with one ear obviously visible, displaying a long pointed ear. She has a nervous smile. Behind her, hanging from a rope on the wall, are dozens of ear prosthetics.]
I vaguely recall the same thing from something fantasy, but can't recall what. I decided to brave TV Tropes to see. I got this:
and then again in the TV show section:
And in Western Animation:
But that's the best I could find. Definitely not ringing a bell for me.