intj

• (Internet) The supposed sound of adding a user to one's kill file.

noun

• (countable) The sound of something solid landing.
  "I just heard a plonk – did something fall down in the kitchen?"

verb

• (transitive) To set or toss (something) down carelessly.
  "When you’ve finished with the sponge, just plonk it back in the sink."
• (reflexive) To sit down heavily and without ceremony.
  "Using a tractor fan, shock absorbers, PVC pipes, a bicycle frame and anything else he could lay his hands on, he then built a rudimentary wooden tower, plonked his home-made generator on the top, and eventually got one, and then four bulbs to light up."
• (transitive, Internet slang) To automatically ignore a particular poster.
  "I got tired of his trolling and ad hominem attacks, so I plonked him."

adv

• (followed by a location) Precisely and forcefully.
  "He dropped his bag of tools plonk in the middle of the table."