The Pakistani Air Force recently purchased a fleet of Chinese fighter jets. They invited over a Chinese official and at a gathering, the Chinese guy says to the Pakis, 'These planes are so simple, even you fools can use them'.
The chief of the air force asks how it's all done. The Chinese guy says, 'OK. So easy! Press this button to go right. This button to go left, and this button to go up!'
The Paki Air Force Chief then asks, 'So, how do you come down?'
The Chinese guy replies, 'Oh, leave that to the Indian Air Force!'