The action that takes place inside one's ears/ear when a sound or combination of sounds(music, or other eardrum companions) enters your ears/ear and is so amazing that you feel as though your ears just Cam and need a cigarette before they go back for round two.
Definition - After hearing an amazing song, you fill that you have, indeed, climaxed through the organ of hearing.
Ex: Zac - Brand New is one of those bands that you HAVE to have in your life, in order to live.
Taylor - haha, i think i've listened to one or two of their songs before.
Zac - they probably caused an ear orgasm.
Zac - eargasm
Noun: The sensation one feels when listening to absolutely amazing music.
Verb: To listen to such great music or voice that one feels the need to have sex with that said song or voice.
No one is sure where the term "eargasm" came from, but it probably happened when someone was writing a blog that was talking about their favorite song, band, or voice and realized that they always felt horny when listening to that said song, band, or voice.
Sandy: Oh my gosh, Jane, I was watching Repo! The Genetic Opera last night and I listened to Zydrate Anatomy and it gave me a huge eargasm!
Jane: I know, that really deep, sexy voice of the Graverobber makes me wanna fuck his voice so bad!