‘Stop embarrassing yourself’: Trump ridiculed for being ‘dumb as a fencepost' for thinking Pelosi can be impeached

President Donald Trump was impeached on Wednesday but still seems very unfamiliar with the constitutional mechanism.

"Nancy Pelosi is looking for a Quid Pro Quo with the Senate. Why aren’t we Impeaching her?" Trump asked on Twitter.

The answer is easy: members of Congress can not be impeached under the United States constitution.

Despite Trump's fixation on impeachment -- which has dominated his combative Twitter feed -- the president's failure to familiarize himself with impeachment was derided online.

Here's some of what people said: