I think it's the mix of alcohols. In my experience mixing different types of alcohol gets you way drunker way faster. And gosh, at the end of a beers around the world run you could have various beers, tequila, vodka, rum, wine, sake, and mead all within ten hours lol.
![giphy.gif](https://media2.giphy.com/media/3oFzmrqh43AvYwn9Cw/giphy.gif?cid=790b76119541cfe7888dededbb7b0105d9de5112710d29e8&rid=giphy.gif)