Surface to Air Missile 

Pronunciation: (sur-fis) (too; unstressed too, tuh) (air) (mis-uhl or, especially Brit., -ahyl)

This is the term for when you are sitting on the toilet, and flush it (unknowingly sealing your fate) and the water (usually ice cold) comes up into contact with you. Often times with males, this cold water first comes into contact with the family jewels.

Examples:

Dude, I was taking a nuke hiroshima and got hit with a surface to air missile.

I need a mop to clean the floor because I got hit with a surface to air missile.

Surface to Air Missile by JimmyJacobJoe October 26, 2009