What does buy a vowel buy a vowel mean?

buy a vowel buy a vowel meaning in Urban Dictionary

This means that you never exactly determine what someone says, therefore'd like them to elaborate To purchase unlawful substances preferred at raves. Two particularly tend to be suggested in this phrase:1) LSD, also referred to as acid (A)2) MDMA, also called ecstasy (E)As A and E are vowels, to "buy a vowel" will be purchase one of those medications. The expression is derived from the favorite "Wheel of Fortune" tv game program, but its raver connotations had been spread because of the film "Groove."