If you're eating right now ... you should probably finish ... because Jesse James just posted a photo on the Internet that will obliterate your appetite. 

It should be self-explanatory -- but if you're too squeamish to click, Jesse cut off the tip of his right pinky. Right under the nail. It's real gnarly, so click at your own risk.

He posted the photo on his Instagram, along with the caption, "Doesn't look like this little dude's gonna make it, Nice know'n you little buddy."

As for what happened -- Jesse called in to TMZ Live moments ago, explaining he was working a machine at his shop in Texas ... and had a little accident (no kidding).

He wasn't too concerned though ... he called on his way to surgery sounding like it was just another Tuesday. Pretty badass.

  

  

  

  

    

  

  

  

Something stinks in Wade Robson's new molestation accusations against Michael Jackson -- so says MJ's famed trial attorney Tom Mesereau, who tells us the smell leads all the way back to AEG ... the company currently being sued by Katherine Jackson.

Tom called in to "TMZ Live" moments ago, claiming the timing of Wade's accusations is extremely suspicious -- considering the legal battle currently raging between Katherine and AEG ... the concert promoters behind MJ's 2009 "This Is It Tour."

Katherine and Michael's children are suing AEG, claiming the company is responsible for MJ's death by negligently hiring Conrad Murray to care for the singer ... and potentially BILLIONS of dollars are at stake.

Mesereau insinuates Wade's accusations are motivated by money ... specifically a payoff from AEG, which is currently on a mission to trash Michael's reputation.

We reached out to AEG for comment -- so far no word back.