Jamie Foxx has some brand new high caliber ink -- a 9mm handgun -- which he flashed onstage with Reese Witherspoon.

Jamie's Glock handgun tattoo was on display during his appearance at a Stand Up To Cancer event ... but like he's done in the past -- it's a fake. He got it for his new movie "Baby Driver," which comes out next year.

Handguns or tribal head tatts -- like he got for "Horrible Bosses" -- neither's gonna look good at Thanksgiving dinner. Good thing they're temps.

Celebrity Ink -- Guess the Tattoo! Gallery Launch Gallery Getty/Instagram

See also

Paris Jackson -- This Tatt's for You Grandma (PHOTO)

Ben Affleck -- Thank God ... The Back Tattoo's Fake

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