Used as a rebuttal to anyone, usually a 4chan frequenter, who says "the cake is a lie." It is usually said by someone that has actually completed the game "Portal" in which, upon completion, one sees a cutscene showing that the cake is, in fact, not a lie.

Over-The-Pants-Hand-Job. Distant cousin of the dry hump.

The cake is not a lie.....

This is the less commonly heard anti-phrase, of the

popular " the cake is a lie"

suggesting that the said thing is true, or factual.

The "cake is not a lie" can also refer to the realasing of the

game "portal 2" which has not happened yet.