On the episode of The Prisoner "The Girl Who Was Death," Patrick McGoohan stops by his local pub, only to learn — upon finishing his beer — that his drink's been poisoned. He saves himself by rallying like a champ.

If you wish to play similarly cruel pranks on your house guests, Sean Michael Ragan has a guide on how to etch such a glass over at MAKE. Please remember to not actually poison your guests or to sic mysterious balloon monsters on them.

[Via Neatorama]