For me, I true slip is accidental. No on intentionally slips and falls on the ice. Slipping is not intentional. I don't see how I can pick up a drink "accidentally." If I go to a party and people are serving wine, I should know not to start drinking it. If I pick up a glass of wine that someone hands to me and I drink it, then I know what I'm doing. The only way I can accidentally drink is if someone slips me some alcohol in a non-alcoholic drink I am having. But after the first sip, I should become suspicious. If I continue drinking after I taste that first sip of alcohol, then that is my choice.