I had similar experience in a non-greek country. Woke up, grabbed a bottle of water... but it wasn't water, it was... palinka (strong spirit made from fruits)
That's worse than my friend's experience. Someone visited her early in the morning, and in her half-awake state she made him a frappé with raki. There's another experience in my family, where we expected tsipouro but toasted with holy water instead.