Actor and big-time Bernie Sanders supporter Tim Robbins ignited a bit of a Twitter frenzy on Monday when he alleged that “voter fraud” is to blame for some of the Vermont senator’s losses during his run for the Democratic presidential nomination.

Robbins retweeted a meme by comedian Lee Camp essentially claiming that there’s a discrepancy between exit poll results, which favor Sanders, and election results in favor of Hillary Clinton.

In case you’re not a numbers person, the message includes a strong accusation in bold white letters: “The election is being stolen” and that the “machines are being rigged.”

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Hey NYTimes, CNN. Are you saying that 2+2=5? Are you really OK supporting a candidate with these numbers?#VoterFraud pic.twitter.com/LrxqLTaKbC — Tim Robbins (@TimRobbins1) April 25, 2016

It sounds very serious indeed. Except for one little problem, which the Washington Post was quick to point out in an article titled, “You need to chill out, Tim Robbins.”

After calling the Robbins rant a “very bad tweet,” The Post gives the actor a quick lesson in “Exit Polls 101.” The tone of the Washington Post article at times resembles that of an exasperated teacher forced to repeat an obvious point already covered in a previous lesson.

“Last week, we explained how exit polls work,” says the Post. “In short, the pollster (Edison Media Research) conducts interviews at polling locations, collecting a ton of demographic information about voters. Since they aren’t talking to every voter, they use statistical analysis of turnout, past and present, to estimate overall patterns — including the likely winner.”

In other words, the Post says, exit polls are not always accurate, because they’re, well, polls. And so it’s not really a conspiracy theory or fraud. Several people on Twitter seemed to agree with the Post.

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WOW. Thank you for explaining why what Tim Robbins posted is inaccurate and slanderous https://t.co/uAGo4tb3jn — Debra Messing (@DebraMessing) April 26, 2016

Maybe all that time Tim Robbins spent in the hole in Shawshank prison made him down right crazy. LOL https://t.co/gVrAgrct5v — Maggie (@MargaretClancy) April 26, 2016

Tim Robbins is to reading exit polls what Tim Robbins is to plausibly pitching a baseball. — Yeggo (@Yeggo) April 26, 2016

It certainly looks as if Bernie's huge NY loss has drivin Tim Robbins insane,but I'm doubting it was a long journey — Shawn Gallagher (@sgallagher9989) April 26, 2016

Bernie Sanders should distance himself from Tim Robbins. He is up there with Ben Carson in the "worst surrogate club" — Carol Fitzpatrick (@crl_fitzpatrick) April 26, 2016

it says a lot that tim robbins has passed tom cruise as the cast member from "Top Gun" who became the most deranged member of a cult. — Jay (@WhiskeyInSpace) April 25, 2016

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Is Tim Robbins trying to win Susan Saradon back?https://t.co/0olH8d2usk — Kyle Griffin (@kylegriffin1) April 25, 2016

Tim Robbins and his fellow Bernie Bros are having a meltdown. Going all out conspiracy theories. #leftwingnutjobs — Lisa Arbogast Grant (@lisaarbogrant) April 25, 2016

My neighbor got drunk and ran into the street yelling political gibberish- is that called "going all Tim Robbins" or "Susan Sarandon"? — Candice-a snarky Dem (@artist4ever) April 25, 2016

This Tim Robbins stuff makes me think we should have spent a few more days here celebrating Prince. — Bob Schooley (@Rschooley) April 25, 2016

Why Bernie Sanders supporters are so annoying, explained — by @jbarro https://t.co/z93zJYeSTG via @bi_politics — BWDemocratic Whore (@theonlyadult) April 25, 2016