This dad can’t ask his kids, “What have you done for me lately?”

When Keith Strawder Sr., of Houston, Texas, found out back in June that his sons had bought him tickets to see Janet Jackson in concert, he could barely contain his joy — as seen in a video that went viral.

Now the 54-year-old just had his wildest dream come true: He got to meet his idol at her Sunday show in Las Vegas.

“He’ll probably come down off cloud nine sometime next year,” KB Strawder tells The Post of his dad’s escapade.

It seems that Jackson’s team saw the Twitter video, which shows Keith’s elation over the tickets, and got in contact with his sons to organize an even bigger surprise.

“I had to keep this whole thing a secret [from him],” says KB, 30. “it came together flawlessly.”

After seeing Jackson perform at the Park Theater on Sunday, KB had his father follow him to an elevator area. “I had to tell him someone wanted to give us an autographed Janet T-shirt,” KB recalls.

Instead Jackson herself showed up.

In a video of the meeting, Keith is talking about how much he’d enjoyed the show when the singer walks up behind him. After saying that her stage entrance was his favorite part, she hugs him and says, “That’s really sweet,” as he gasps.

“I didn’t want to overreact,” Keith tells The Post, “I just wanted her to know that she’s such an overall wonderful person.”

The two had a conversation about San Diego, where he used to live, and it felt “very normal, very easy,” says Keith, who calls himself Jackson’s No. 1 fan.

“It was like we’d been friends forever,” he says.