'Him do good math': The internet crushes Trump for faintly marking 9/11 with ‘17 years’ tweet

President Donald Trump marked the anniversary of the 9/11 terrorist attacks with a breezy tweet -- and other social media users buried him in scorn.

The president spent the morning catching up on Fox Business Channel programming from the previous night and complaining about the Russia investigation before turning his glancing attention to the events of Sept. 11, 2001.

Other Twitter users were shocked and horrified by his flippant remark.