Joke 24: Alcohol contest

British, Russian and Czech want to decide whose alcohol is the strongest.
The British drinks a bottle of whiskey and they ask him how many chairs he sees.
“Three!”
“Not bad, not bad at all.”
The Russian drinks a bottle of vodka and they ask him how many chairs he sees.
“Five!”
“Very good, very good indeed.”
It's the Checks turn, he drinks a bottle of slivovice and they ask him how many chairs he sees.
“And in which row do you mean?”