If you take the first letter, than the last, then the second letter, then the second-to-last, etc., until you use all of the letters, you'll find they spell:
WHOONCETURNEDFIVEINNOCENTMEERCASINTOONEDELICIOUSMEERCAPIE
Which, when broken up, says "WHO ONCE TURNED FIVE INNOCENT MEERCAS INTO ONE DELICIOUS MEERCA PIE"
And the answer, as you'll find in the Neopedia, is Edna the Witch.
Those poor innocent meercas!