Stephen Colbert thinks Donald Trump’s self-congratulatory response to the Orlando terrorist attacks was “grandstanding” and in poor taste. He made as much clear during an interview with Bill O’Reilly on Monday.

But he’s not done pressing the point. On Tuesday’s show, Colbert went after Trump — hard.

He started on a serious note.

“This whole speech, with its nativism, its fearmongering, and especially its self-aggrandizing in the face of tragedy feels like a new low,” Colbert said, before joking: “It makes me long for the days when Trump was just bragging about the size of his penis.”

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WASHINGTON, DC - SEPTEMBER 16: Comedian Jon Stewart (C) joins Feel Good Foundation founder John Feel (L) to demand that Congress extend the Zadroga 9/11 health bill at the U.S. Capitol September 17, 2015 in Washington, DC. The former Daily Show host joined ailing police and firefighters in lobbying Congress for a permanent extension of the Zadroga Act's $1.6 billion health and monitoring effort for the 72,000 emergency responders who worked at Ground Zero. (Chip Somodevilla/Getty Images)

After some more jokes about the male anatomy, Colbert eventually broke out a chalkboard and diagrammed Trump’s comments, resulting in, well, a swastika and then something else that we’ll let you watch for yourself.

He concluded by saying that Trump had better clarify what he means by his suggestive comments that “something is going on” when it comes to what he described as President Obama’s soft response to terrorism.

“I hope Trump explains it soon, because until he does, that kind of looks like he’s an [expletive],” Colbert said.

(Warning: Some adult humor.)