system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does one raise a glass for a toast?

Just curious where that trend started.
gpt
Poisoning. When glasses hit each other the drink would go into the other persons thus showing a sense of camaraderie. people were often (I suppose still are) in the past and the wine would ideally drip into each other hence proving that they could drink together as one. this is also the basis of the story of the grail as when we drink as one we have mutual love for life and our efforts.