Prank A: My dad, who is an immigrant, says that when his friends who were immigrants had just moved to the United States and were trying to learn English, some other Turks pranked them by telling them about "these people called Jehovah's witnesses who you just call and they'll come and teach you English," then the immmigrant Turks would call the Jehovah's witnesses, and... well, you know the rest.... 
Prank B: I called my mom's friend, then when she picked up the phone I flushed the toilet and said, "AHHH!! ! I feel like a NEW man..."
I dont think Prank b is funny, but i think prank a is... discuss