Sean Penn jokes Russians hacked his hair in viral 'Morning Joe' appearance
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Sean Penn's appearance on "Morning Joe" on Tuesday caused viewers to question what inspired his unruly hairstyle.

The actor appeared on the morning talk show hosted by Joe ScarboroughCharles (Joe) Joseph ScarboroughScarborough slams Jordan for spreading 'lies' about Fauci: 'It's sheer idiocy' Scarborough, DCCC chairman have heated exchange over 2022 strategy 'Morning Joe' hosts criticize cancel culture over McCammond tweets MORE, Mika BrzezinskiMika Emilie BrzezinskiScarborough slams Jordan for spreading 'lies' about Fauci: 'It's sheer idiocy' 'Morning Joe' hosts criticize cancel culture over McCammond tweets De Blasio slams Cuomo: 'The bullying is nothing new' MORE and Willie Geist to promote his nonprofit Community Organized Relief Effort (CORE), which is helping to combat the coronavirus nationwide, while wearing a white t-shirt, with hair that was sticking up all over.

Twitter users were quick to roast Penn over his "homeless" look, with one user dubbing it the "most 2020 thing ever."

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The Academy Award winner explained his look on Twitter, joking that Russia had hacked it.

He seized upon the moment by encouraging people to donate to his charity. 

"If you think my hair goes wild on Morning Joe when hacked by Russians (allegedly), you should see how much wilder it goes when peeps donate to @COREResponse," he wrote.

On Friday, Penn tweeted about the alleged Russian cyberattack on SolarWinds, writing that it will "impact our lives in ways we can’t yet imagine."