One of these layers is not like the others...
And nary a portal shall ever separate them.
Portals, they're essentially a series of tubes... much like the internet.
Check out these Portal-themed wedding rings by Etsy user 17thbit! Now you're thinking doing everything in your entire life with Portals!
There's more than one way to express your nerdy side. Why not throw them all at one cake?
The confection is a fabrication!
... "Portal" fans, am I doing this right?