The problem is a semantic one -- there isn't a good word for what this is in English. There isn't even good slang.
If you ply someone with booze or drugs to take advantage of them, technically it doesn't fit the definition of "rape" but morally and functionally, it's the same damned thing.
There's an enormous difference between "let's catch a drink and let our guard down" and "lemme buy you a dozen tequila shots so you'll be more compliant."
(Read this and then consider what message the scene sends to its audience. It's even more fucked up that it appears in a cartoon.)