Need a word or phrase: one who won't shut up!

“Diarrhea of the mouth” is the first thing that comes to my mind, but I was wondering if there might be a more “Shakespearean” way of putting it.

Logorrhea

Blatherskite

Chatterbox

Yabbertrap

Vaccinated with a phonograph needle.

Yes, you damned kids, you may get off my lawn now.

blabbermouth

Kanye Westing

Having more rabbit than Sainsbury’s.

Garrulity, prolixity, verboseness.

We call her Shannon.

Bavard, en français.

But Taylor Swifting is not what you think.

Bucketmouth

I thought the SD term was “Maynard”

Motormouth

Chatty Cathy

loquacious

Palaverous.

Ratchetjaw

Gum flapper