pappu logic
(Received this one in a discussion forum)
Pappu belongs to Delhi
Pappu says that all Delhites are liars
This means that Pappu himself is a liar
If Pappu is a liar, what he said must be a lie
This means that all Delhites are truthful
If all Delhites are truthful, then Pappu also must be truthful
If Pappu is truthful, then what he said must also be true
If what Pappu said is true, then all Delhites must be liars ….