Hi

I saw this joke somewhere and I need help translating and understanding it.

После трёх рюмок коньяку француз переходит на минеральную воду, а русский — на «ты»

So far I have something like
"After 3 glasses of "?" the French man goes to mineral water, while the Russian goes to «Ты»

Is this correct?

Also I'm having a little trouble understand this, is it because Ты sounds like "tea"?

Thanks