With Comic Relief, which is televised on Friday evening, in mind the striker backed Alan Sugar's donation drive to force the vocal Gunners fan to wear the rival colours.
Starting as a pledge to remove himself from Twitter for 24 hours if £5,000 was raised, the ante was upped soon after to include the Spurs shirt if a £50,000 target was hit.
"A little earlier I said I would come off Twitter for a day for Comic Relief if we raised £5,000," he said.
"Within about seven minutes Lord Sugar, hovering in Florida, had posted a video to say he’d pay the whole thing to shut me up.
"So we then reset and I, in a reckless moment, said I would wear a Tottenham Hotspur shirt, which if you know my football allegiance is the nearest thing to hell imaginable, if viewers raised £50,000."
The likes of Gary Lineker, Rio Ferdinand, Kevin Pietersen and Jamie Redknapp all soon pledged to donate £1000 each.
Kane, though, did not settle for the challenge and wants Morgan to purse his lips over the famous crest for an extra £1000 to the kitty.
"I'll donate to help reach the Comic Relief target," he wrote on Twitter. "I'll double my contribution if Piers Morgan kisses the Spurs badge on live TV."
Unfortunately, Morgan refused by telling Kane to "kiss my a**" and then uploading a photo of the striker has a child wearing an Arsenal kit.
You can donate to the cause, in aid of Comic Relief, here.