The sight of gun-toting Mickey Mouse.
All of the above panels are from Fantagraphics' Walt Disney's Mickey Mouse Vol. 2: Trapped on Treasure Island, part of their series collecting Floyd Gottfredson's excellent run on the Mickey newspaper comic strip.
Now our friend Mickey Mouse mostly just threatens his opponents with gun violence. I've yet to see him actually shoot someone, let alone kill them (shooting the gun out of Peg-Leg Pete's hand in one of the above panels is as close as I've seen him come), and his weapon of choice is usually his fists.
But this action hero version of Mickey is so far removed from the bland, safe, corporate mascot he has been throughout my entire life that seeing him packing heat seems so alien to me that it's amusingly absurd, along the lines, of, I don't know, seeing Fred Flintstone and Barney Rubble smoking cigarettes or Superman beheading a foe.
The last three times I encountered Mickey Mouse were 1.) Reading the first half of this volume of comic strips, 2.) Watching the computer-animated toddler-focused television show Mickey Mouse Clubhouse over the head of my completely enraptured almost-two-year-old cousin at a relative's house and 3.) reading the second half of this volume of comic strips, which includes the following scene:Those are the middle two panels of a four-panel strip. For context, Mickey's training a racehorse, and when he first fired a starting pistol—which I guess were real pistols in the 40s?—the horse ran away, frightened by the noise, so Mickey's trying to teach him not to be afraid of the sound of a gunshot.
Whatever the reason though, it's awfully hard to imagine the guy who was trying to teach my cousin how to count last week is the same one saying "Guns can't hurt ya!" and "Pluto likes guns!"