"When you stand there with a microphone, I just feel a bit naked, a bit weird", he said.
"Just him, no security or anything, he came to this really, really filthy dive bar", Sheeran recalled, before getting to the insane part of his story.
They also belt out several Sheeran hits, obviously.
Speaking of the Biebs, the "Galway Girl" chart topper revealed that after a night at a "really, really filthy bar" in Tokyo with the star, the pair made a decision to go to a golf driving range, where Justin put a golf ball in his mouth. We ended up at this golf course, he put a golf ball in his mouth and said, "Go on, hit it out".
Sheeran also spoke about his love for dive bars, telling Corden that he managed to coerce Justin Bieber to a little hole in the wall in Tokyo after which, Bieber drunkenly requested he try to hit a golf ball out of his mouth.
Sampaoli Takes Charge Of Argentina Until 2022
Argentina now lie fifth in their qualification group and only the top four automatically go through to the finals. Argentina face four further World Cup qualifying games, starting with a stern test away to Uruguay in August.
"You can probably beat me, actually" Sheeran said.
'I had this driving wedge and I [teed up] and I cracked him across the face!' he recalled.
James Corden and Ed Sheeran went for a drive in Los Angeles Tuesday afternoon, where the two belted out songs off Sheeran's new album, but more fascinating than their pipes was the number of Maltesers they could each stuff into their mouths.
However, the Canadian heartthrob reacted "really cool" after he received the massive blow, much to Ed's surprise.
The singer added: "But instantly, bringing out a guitar it's a lot more comfortable". It's just what it would have been like 30 years ago for our parents'.