My Number One Pet Peeve

I completely understand that my speech is almost impossible to comprehend. My pitch is alternating too high or too low, I speak way too fast, I mumble, and I add extra vowels to words. I know that I need a speech therapist. All that being said, I hate, Hate, HATE when people nod, smile and pretend to understand what I'm saying. I know it's annoying but just ask me to repeat myself. Tell me to speak up or slow down. Just don't be a dick about it.