Call an unknown phone number and ask, "Munna hai kya?"
{Whoever picks up the phone} will say, “No wrong number".
Again call after five-min, "Munna hai kya?"
She will reasonably be annoyed and say, "No this is wrong number".
Again call, "Munna aa gaya kya?"
She will say, "Aap ka dimaagh kharaab hai kya?! Kiyun peechhay paray ho?!"
Again call after five-min, “Munna ko phone dena."
She will cry with all ‘gaaleees’.
Then you just drop the phone.
Call after another five-min, "Main Munna bol raha hoon, mera koi phone to nahi aya?