A man takes a napkin to a gypsy fortune teller. As she waves her hands across the napkin, her candles blow out leaving a trail of XX smoke. He runs out to the street to chase a girl on a bike who has XX tail lights. He ends up in a nightclub, where the bartender is the woman with the napkin, who signs her notes "XX".
"Dos Equis, sooner or later you'll get it" says the tagline which makes me think of those times I'm at a late open super market choosing between six packs of brand names beers i don't much care for and then I take Dos Equis because I haven't tried it in a while and can't remember if it was good or not. I'm not sure that's what they wanted me to think.
Client: Dos Equis