An event that suddenly and randomly happens out of nowhere and often drastically changes a plot or conversation

one of the moves vegeta used against majin buu and toppo. A huge explosion of ki creating a sphere around the user dealing immense damage to the enemy

A massive and devastating explosion in the seat of someones pants that was caused bu flatulence.

a) (for men) : a more sperm-abundant than usual ejaculation
b) (for women) a more forceful, in terms of quantity, distance etc, expulsion of liquid during squirting

When you cum so much inside another person that they blow up like a balloon and eventually explode.

Laughing hysterically to the point of "exploding."

A hernia is a tear in the abdomen wall -- pain and discomfort caused by tears in some cases by heavy pressure placed on abdomen, ie. Laughing uncontrollably, thus a Herniotic Explosion.

Advice designed to get you to do something stupid.