WATCH: Bernie Sanders tells Conan there's a 'scary' double meaning behind Trump's clownish tweets

Sen. Bernie Sanders went onto Conan O'Brien's show this week and was asked for his thoughts so far on Donald Trump's upcoming presidency.

It goes without saying that his thoughts so far are not pleasant.

Specifically, O'Brien asked Sanders for his take on what Trump was talking about when he tweeted out that he would have won the popular vote were it not for millions of "illegal" voters.

"First of all, it's delusional," Sanders said. "It's totally insane. Nobody believes that, nobody who studies elections or election patterns."

That said, Sanders believed there was a more sinister method to Trump's seeming madness.

"This is what is scary about that -- when he says that, he's really sending a signal to Republicans all over this country... and what he's saying is, 'We have got to suppress the vote,'" Sanders explained. "We have got to make it harder for poor people, people of color, immigrants, elderly people to participate because they may be voting against us."

Similarly, when O'Brien read Trump's tweet about stripping people of citizenship if they burn the American flag, Sanders saw there was a menacing subtext where Trump was telling dissenters to think twice before taking their grievances public.

"What he is really saying is, 'If you want to dissent, be careful,'" Sanders said. "It's not just the American flag here -- [it's] 'we're watching you.' That's what's scary about that."

Check out the whole video below.