How to pronounce the “的” in “他妈的”? How usually native chinese speaker pronounce the “的” orally in “他妈的”? Is it "Ta Ma De" or "Ta Ma Di"?
The only correct answer is "TA MA DE". 

This is the equivalent version of "F**K" in Chinese. I never hear people pronounce as "Di". 

Thinking it in other way, it will be too soft and feminine if it's pronounced as "Di". It supposed to be strong and speak with hatred.