Actually there is cake you can find at the end of the game. It was also proven that Ratman was insane, so his tales of the cake being a lie were a simple disillusion.
Shows you what happens when people don't finish and just say the same thing everyone else does when Portal gets mentioned.
Rat man was not crazy! I mean just because he lives in the walls and talks to a cube and eats beans.... OMG HE'S NUTS!!!!!!!!!!!!
The meme effect( bandwagon's cousin who has been hitting puberty for awhile now) will continue to spread. It is amusing how the words work though. Saying "a lie", not even needing the other words bring "The cake is a lie" to the front of many peoples minds. Oh subtle indoctrination you so silly.
lol oh god I can't even think about the nether right now I become paranoid walking around the wild in daylight I can't even imagine how I'd react in the nether I'll probably have a heart attack
