Alert the Guinness Book of World Records.

(click image) It's the smallest beer ad in history. Cute little Ad Creep execution via Chicago's Tank Communications. Certainly beats a neon sign over the bar for point-of-purchase placement. Though most of the pool joints I've played in have blue chalk, not white. God, I wish I was both playing pool and drinking a Guinness right this fucking moment instead of writing this stupid fucking post (image via).
Previously in little ads:
• KIA's useless little biplane beach banner.
• Austrian divorce lawyer advertises on chopsticks.