As Eric and Donald Trump Jr. slam Joe Biden’s son for serving on the board of a Ukrainian company while his dad was vice president, their international operations capitalizing on White House connections are “warp speed” unethical, declared a former speechwriter for President George W. Bush.

“Rest in peace, irony,” joked MSNBC host Joy Reid Saturday on “AM Joy” after playing clips of the Trump brothers angrily ripping Hunter Biden.

Reid’s guest David Frum quipped: ”When you see poor Eric and poor Don Jr., you realize there are bivalves with more self-awareness than the Trump children.”

They argue — without any evidence — that Joe Biden worked to block a corruption probe into an energy company whose board of directors included his son. Meanwhile, they profit from international operations stretching to as many as 30 nations still owned by their dad, the president.

“Presidential families should behave themselves in more circumspect ways,” said Frum, who is also an author and writer for The Atlantic. “The Trump family is so far and away the most corrupt in American presidential history that you really can’t think of who’s in second place.”

Eric Trump last month slammed Hunter Biden’s role in an international company. A day later he hailed a brand new housing complex development in Scotland for the Trump Organization, which is still owned by his dad.

Just weeks earlier the Air Force launched an investigation into personnel spending tens of thousands of dollars at Trump Organization’s Turnberry golf resort in Scotland during refueling layovers at newly favored nearby Prestwick airport.