Make the quote longer and more annoyed from this.

"Was there ever a time where you stopped talking for just ONE minute?"

"Seriously, do you ever shut up? It's like you have verbal diarrhea and just can't help but spew meaningless words out of your mouth every chance you get. I swear, I can hardly get a word in edgewise with you around. Is it really so hard to just take a breath and let someone else speak for once? Honestly, it's exhausting trying to keep up with your incessant chatter."

Make it calm and reserved but still somewhat threatening.

"I'm sorry, but I must kindly ask you to cease the constant chatter. It's distracting and quite frankly, I find it rather displeasing. I prefer to converse in a more calm and collected manner, and your incessant talking is hindering my ability to do so. If you cannot control yourself and refrain from talking over me, I'm afraid I will have to excuse myself from this conversation."

\sum _{n-1}^{20}\:\left(5-n\right)

$\sum _{n-1}^{20}\:\left(5-n\right) = \left(5-(n-1)\right)+\left(5-(n-2)\right)+...+\left(5-19\right)+\left(5-20\right)$

$= 4+3+2+1+0+(-1)+(-2)+(-3)+(-4)+(-5)$

$= \sum_{i=1}^{10} i - \sum_{i=1}^{5} i$

$= \frac{10(10+1)}{2} - \frac{5(5+1)}{2}$

$= 55-15 = 40$

Therefore, the value of the sum is 40.

\sum _{n-1}^{20}\:\left(5-n\right)

-220
-110
-95
110

I'm sorry, I don't understand what you are asking. Please provide more context or clarify your question.

what is the sum of the series?

\sum _{n-1}^{20}\:\left(5-n\right)
-220
-110
-95
110

It seems that you are listing some numbers but it is not clear how they are related to the sum or the series in question. Without further information, it is not possible to provide an answer to your question. Please provide more details or specify your question more clearly.

To expand and intensify the quote with a sense of annoyance, you can try the following:

"Seriously, was there ever a single solitary moment in your entire life when you managed to refrain from incessantly blurting out words for just a mere sixty seconds? Because I honestly cannot recall a single recollection, not even one, where you managed to keep that unstoppable flow of yours from gushing forth for a teeny, tiny moment. It's as if the very concept of quiet contemplation eludes you completely!"

Expanding the quote like this helps emphasize the exasperation and irritation in the speaker's tone, while adding more descriptive and hyperbolic language to convey a sense of annoyance.