in primary school, year 1 i remember being told that the vowels are 'A, E, I, O, U and sometimes y'
however several people have argued that they've never heard of this before, even in the face of irrefutable proof;
http://oxforddictionaries.com/words/is-the-letter-y-a-vowel-or-a-consonant
and
http://dictionary.reference.com/help/faq/language/g01.html
can someone reassure me, that i'm not crazy? :P