1. An extreme case of diarrhoea.
2. The dirtiest, smelliest shit ever excreted.
1. "I've got a real case of the butt melts Doc"
2. I just had a butt melt all over the toilet basin.
by Action Jackson February 17, 2004
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Pronoun.

The Ultimate Punk Rock Supergroup, featuring members of the Stickybacks, Strike of '59, Morose, Baron Bum Blood, the NRA, Dead Kid Chronicles and the Monster Squad.
by Rik Waller February 23, 2004
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