When you get turned on so
fast that your dick gets hard quicker than it can rearrange itself in your pants. Usually requires manual adjustment and is accompanied by drool and the inability to
make rational decisions as lack of
blood leaves your brain in a stupor.
Friend: “yo!
Dude! Fix yourself! You got an insta-boner.”
Me: *babbles incoherently*
Friend: “Emily walked by, didn’t she?”
Me: “random
jibberish* *fixes
junk*