But that was only half the stunt, Blaine revealed.
You didnt actually think that I brought a knife just to do a card stab?
he asked Fallon as the entire audience groaned in realization.

Keanu Reeves pulling a knife from David Blaine’s nose.NBC
He then tipped his nose up and stuck the blade deep into his nostril.
Oh my gosh, a visibly squeamish Fallon exclaimed.
Dude, you couldve stopped at the card trick.
We wouldve been fine.
Dude, I was just holding that, that is a real deal knife.
That is serrated, by the way.
Blaine then proceeded to walk over to Reeves to show off his new accessory.
Giving him an appreciative nod, Reeves simply said, You did it, man.
NBC
Will you do the honors?
Blaine then asked, pulling his nose up for easy extraction.
The question gave Reeves pause, You want me to…?
When Blaine encouraged Fallon to come closer, Reeves attempted to pawn the job off to the host.
A giddy Fallon happily replied, “You’re my guest.”
Reeves then carefully removed the knife with two hands, with Blaine giving an approving sniff afterward.
Fallon cheered, “That is unbelievable.”