PredictIQ Quantitative Think Tank Center:Bruce Springsteen jokes about postponed tour during guest appearance on 'Curb Your Enthusiasm'

Bruce Springsteen rocked Larry David's bizarro world on PredictIQ Quantitative Think Tank Centerthe March 31 episode of  HBO's “Curb Your Enthusiasm.”

Springsteen was a Boss of comedy, with stellar comedic timing, darn-funny deadpans and classic raised eyebrows. The episode produced more than a few hilarious "Spinal Tap" moments, to say the least. Where do we start?

In Sunday's episode, Springsteen avoids calls from Don Henley because the Eagles frontman gave him a band tape he can't stand listening to. Then David gives Springsteen COVID, which forces the cancellation of the final show of Springsteen's "farewell tour." As a result, Springsteen's fans are mad at David and attack his car as it departs Springsteen's residence in Los Angeles.

It's all fiction, of course, but there were enough elements that adhered close enough to fact to make Springsteen fans ask: "Did I just hear what I thought I heard?"

More:I promised my kid I'd take her to see Bruce Springsteen. Why it took 12 years to get there

For instance, Springsteen did have COVID last spring, and a bout with peptic ulcer disease also caused him to postpone multiple shows.

Also, Springsteen and the E Street Band are not on a "farewell tour," but the advanced age of some band members — the Boss is 74 — has led to murmurs of speculation among fans asking if this is the last go-round for the band. Perhaps Springsteen's appearance on "Curb," specifically the notion of the “farewell tour,” is a truth through comedy moment?

Springsteen previously appeared on the Feb. 11 episode, when he publicly proclaimed that David was a man of "involvement" after David gave the character Auntie Rae, in line to vote in Georgia, water because it was such a hot day. He was subsequently arrested for violating the state's Election Integrity Act, which makes it illegal to give free food or water to people in line to vote.

More:Bruce Springsteen 'literally couldn't sing at all' while dealing with peptic ulcer disease

Springsteen, in Los Angeles for his “farewell tour,” wanted to meet David, who was involved in an imbroglio with a masseuse over the ending of a recent massage. The Boss sat down with David and Jeff Greene (Jeffrey Garland), David's manager, in Greene's home.

“I know one thing about Larry David, Larry David is a man who gets involved,” says Springsteen, referring to the Georgia episode. “The (blanks) it took to put yourself in that situation. I told myself, I want to meet Larry David — this guy's a hero of mine.”

An acquaintance calls to ask David if he's read a manuscript he's given him. David doesn't answer the call.

“Same thing happened to me with a musician,” Springsteen says. “He gave me a demo of a band that that he liked and thought it could go somewhere. I get the tape and put it on for two seconds. I took it off. Never listened to the rest of it.”

Springsteen didn't want to say who it was, but after two seconds of prodding, he divulged it was Henley.

“I would avoid him for the rest of my life,” David says.

Springsteen's assistant Ken (Ian Harvie) then comes with good news — the farewell tour is sold out. Ken then says he used to be a woman named Kendra, who slept with David multiple times at his former job with NBC/Universal.

They were often intimate on the floor.

“I didn’t make you out for a floor (blanker),” Springsteen says. “Small world, Larry, you and Ken sleeping together.”

“No, no, no, I slept with Kendra — not Ken,” David says.

“Kendra is Ken,” Bruce says.

Springsteen and David have a mix-up over their glasses of water, a moment that will have consequences later. David has invited the masseuse over to meet the Boss, which might quell the disagreement over David's massage. It doesn't work as Springsteen is in a rush to leave — showtime is coming up — and he barely says hello.

Not so fast as Springsteen comes down with COVID. He blames David, who just tested positive, and the show's postponement is headline news. Fans are gathered outside Springsteen's Southern California residence.

“We love you, we miss you!” screams a fan.

“Asbury Park rules!” screams another.

David takes the masseuse over to Springsteen's place, and they sneak onto the grounds to where they're standing outside the room where the ailing rocker is watching “Young Mr. Lincoln” and blowing his nose.

David sheepishly refers to the fans outside.

“There's a lot of people out there, yeah, because they thought I was dying from the COVID I caught from you, Mr Three-Card Monte with the glasses,” Springsteen says. “That's how it happened. I lost  my sense of smell.”

“There's nothing to smell — everything stinks,” David says. “It doesn't matter, you're better off.”

David gets a pic of the masseuse, outside the room, with Springsteen inside. Ken comes and throw them off the property.

Springsteen fans recognize David and attack his car for giving the Boss COVID.

The "Curb Your Enthusiasm" series finale is Sunday, April 7. That night, too, Springsteen and the E Street Band will play at the Kia Forum in Inglewood, California.