Donald Trump calls Joe Biden “sleepy,” and maybe that’s because he doesn’t have the energy or stamina for the job’s grinding pace.

Biden appeared on “Fox News Sunday” today, and after confusing host Chris Wallace with Chuck Todd of NBC’s “Meet The Press,” he said he doesn’t know how the host does his show “early” in the morning.

“Mr. Vice President, thank you, thanks for your time. Please come back in less than 13 years, sir,” Wallace told the South Carolina primary winner.

“Alright, Chuck, thank you very much,” Biden responded.

“Alright,” Wallce said, shooting a glace off camera. “It’s Chris, but anyway…”

“Chris, I just did Chris,” Biden said, again confusing the hosts.

“No, no, I just did Chuck. I tell you what, man, these are back-to-back. Anyway, I don’t know how you do it early in the morning, too,” Biden added.

Wallace wished Sleepy Joe “safe travels” and moved on.