A poker term for having a pair of Aces, usually a pocket pair. All other letters on cards are consonants (K for King, Q for Queen and J for Jack) but the A for Ace is the only vowel.
It is the best pre-flop hand in Texas Hold'em.
Ace/Ace is also referred to as "pocket rockets," "weapons of mass destruction," "American Airlines," and "bullets."
The short stack under-the-gun shoved all of his chips in, and the guy on the button shoved as well. I peeked at my cards, saw vowels, and eagerly shoved all my chips in as well. How could I not go all-in with vowels there?