It s one thing to call a person stupid, it s another to prove it, and that s exactly what Rep. Mark Takano (D-CA) just did to Donald Trump in one simple tweet.You see, Takano is a former British literature teacher, knows a thing or two about the English language and can spellcheck you in real time. That s bad news for a guy like Trump who often takes to Twitter in anger-fueled rants and doesn t take the time to proofread his tweets, or even let spellcheck do it for him.In Trump s latest grouping of tweets, he really, really messed up. In fact, following a tweet that said,  We must fix our education system,  he tweeted  I hear by demand  and then,   I hearby demand    and then finally,  I hereby demand. Check it out:via TwitterNot letting the moment escape him, Takano pointed out the irony of the spelling errors following a tweet about fixing our education system.Takano tweeted: The moment when one tweet is proof of the other tweet. The moment when one tweet is proof of the other tweet. pic.twitter.com/aPV0b9jBOw  Mark Takano (@RepMarkTakano) March 3, 2017In other words, Trump just got called out on his inability to spell and was kinda sorta called stupid.Now, did a Trump staffer tweet out this mess? Maybe. Undoubtedly, Trump won t say it was him because, according to him, he s seemingly never wrong.Nevertheless, Takano s tweet is absolutely hilarious. Well played.Featured Photo by Tom Pennington/Getty Images