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*