Is there a cake in portal 2?

I have been wondering if there is a cake in portal 2 or not. I've seen this question raised on quite some forums but nobody seems to be able to answer it correctly. Some say there is, some say they don't. I've seen a few screenshots, but I'm not sure they are real, because most of them are just from portal 1.

So, is the cake real, or is the cake a lie?

Solution 1:

The cake is not real, nor a lie, because

you are never offered any cake.

The only reference in the entire game can be seen in this video (obvious spoilers)

PS: The new meme is Lemons

Solution 2:

One of the developers said he was tired of the overuse of the cake is a lie meme, so he kept callbacks to it to a minimum.