Ullu ka patha 

ullu ka patha/ patta/ phatta meaning Son of an owl literally but used to call someone a fool

He is an ullu ka patha.
That ullu ka patha is my brother.

Ullu ka patha by Urban Indian September 18, 2013

Ullu ka patha 

Also interpreted as 'a friend of' . Ullo means owl literally and anyone so addressed is implied to be foolish. Thus a friend of one is also implied to be as foolish if not more :)
Essentially a Hindi/Urdu phrase common in northern India:

tum hara kya kehna , tum to ullu ka patha ho!

Ullu ka patha by pyaasi churail August 10, 2016