David Letterman - Stupid Human Tricks 

I can't believe I haven't seen this before. This is incredible. Each one of these is awesome and charming. Man, I miss the 80s.

I can't believe that grape flip. Omg, that was truly incredible!

Now I have to see what he did with the grape!

Rc cola shirts….classic

I was in a class with the first guy when he was on Letterman. Wow, 36 years ago. I hope he's doing well.

"Ventriloquists don't close their mouths all the way." 30 years later, Darcie Lynn Farmer: Hold my juice box.

He didn’t spill a drop!

SIU! Thanks for posting.

What happened to the last one? I was spellbound

Shouts out my homie Andy Sotiropolous!

I suppose he sat on the lever making the grape fly in the air and into his mouth.

Stupid Human Tricks were often at the end of the show when they had B-list celebrity guests. It worked. I'd wait up to see the human tricks.

dave king of late night

Well, that sucks! It fast-forwarded twice during the grape trick! Never got to see it!

huh, no grape flip

Little-known fact: Liz Waxler's performance inspired the guy who invented autotune.

Worries me that David put his hand all over the rim of the pitcher.

The SIU guy... how'd I miss this?

The last trick got cut off

Back when life was just simpler

That third guy looks like if Tom Hanks & Elon Musk had a child.

No what happend with the grape that was intrusting video wanted to see the end