A fail that is so extreme, that it tests the very fabric of nature, religious beliefs, technological advancements, and the origins of life as we know it. The 11th commandment should have been "Thou Shall Not Take Part in Giga Fails." This is how extreme a Giga Fail is.
"That fugly chick who bought me this poster is a Giga Fail."
"The fact that you were born is a Giga Fail in itself."