Originating some time in Jackson Wilson’s early highschool days, stemming from the green bean photo that says “uh oh you frickin moron, you just got beaned!”, Beaning is a way of life.
Depending on context, either having explosive diarrhea or ejaculating aggressively. In both cases, the volume of shit/cum produced must greatly exceed the expected quantity.
Person 1: "Check out this instagram model's hot tits"
Person 2: "Oh my god I'm beaning!"
Person 1: "Dude! You beaned all over the floor what the fuck!"