You need to buy a drink first.

Reader's Digest 9月号の記事 'Life in these United States' からの引用です。
SCENE: Bar
Me: What's the Wi-Fi password?
Bartender: You need to buy a drink first.
Me: OK, I'll have a Coke.
Bartender: Three dollars.
Me: There you go. So what's the Wi-Fi password?

Bartender: "You need to buy a drink first." No spaces, all lowercase.
先日紹介したやはりReader's Digest（6月号）に掲載のパスワードジョーク "Eight Characters Long" を思い出させる長いパスワードですね。