Clanker

Clanker is an internet slang term used to refer to someone who talks a lot or babbles incessantly. This term is often used to describe individuals who tend to speak rapidly or speak without thinking.

Examples:

1. My little brother is such a clanker! He never stops talking, even during a movie.
2. During group discussions, he always dominates the conversation and becomes a clanker, not letting others get a word in.