doulbe negative

A linguistics professor was leturing his class one day . "In English" he said :  ' A double negative forms a positive. In some languages, though, such as Russian, a double negative is still a negative. 


However, there is no languages wherein a double positive can form a negative. A loud voice from the back of the room piped up.'Yeah, right'


There are three kinds of people: Those who can count and those who can't.


An archaeologist is the best husband any woman can have: The older she gets, the more interested he is in