Arnold Schwarzenegger, the new host of “Celebrity Apprentice,” responded to Donald Trump’s Twitter attacks in the most scathing way possible: by reminding him to do his job. Trump, the man with quite possibly the most fragile ego in the world, took to social media this morning to tweet his daily pack of lies and obfuscations. Among these were two tweets aimed at Schwarzenegger, who took over hosting duties for Trump on NBC’s “Celebrity Apprentice,” which began a new season Monday.

Trump, who is still profiting off the show as executive producer—because being president is a part-time gig—took the moment to get petty.

“Wow, the ratings are in and Arnold Schwarzenegger got ‘swamped’ (or destroyed) by comparison to the ratings machine, DJT,” Trump wrote in a series of tweets. “So much for being a movie star–and that was season 1 compared to season 14. Now compare him to my season 1. But who cares, he supported Kasich & Hillary.”

Without stating outright how pathetic Trump’s tweets are, Schwarzenegger drove the point home simply by reflecting on the immensity of the task Trump is failing to do.