Top definition
The act of immersing yourself in the music of Matt Heafy (the lead singer of the metal group Trivium.)

The act of listening repeatedly to the music of Trivium.
Ex 1) She must be heafyafying, she has been listening to Trivium all day.

Ex 2) You know he has been heafyafying recently; he knows all the words to their songs.
by Triviumfan December 19, 2010
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The vengeful act of crapping on a lover's chest while they sleep.

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