The New Hacker's Dictionary

1. BUAF

   [abbreviation, from alt.fan.warlord] Big Ugly ASCII Font — a special form of ASCII art. Various programs exist for rendering text strings into block, bloob, and pseudo-script fonts in cells between four and six character cells on a side; this is smaller than the letters generated by older banner (sense 2) programs. These are sometimes used to render one's name in a sig block, and are critically referred to as BUAFs. See warlording.