shroom boom

A nuclear explosion or an atomic bomb, which makes a mushroom shaped cloud.

"I saw a documentary about shroom booms on the History channel the other day."

by Orly Wild October 16, 2008

Shroom Boom

Man grasps the base of his erection, squeezing, causing the tip of his penis to resemble a mushroom.

While watching the Oprah Winfrey show, i had a hankerin' for a Shroom Boom

by Koonjam and TheBigSmooth December 7, 2009

Shroom Boom Kaboom

(See Shroom Boom)

When a Shroom Boom goes wrong resulting in the "Shroom" to bleed and cum.

While Shroom Booming to Oprah, a Shroom Boom Kaboom shortly followed...

by Koonjam and TheBigSmooth December 7, 2009