The phrase I am the walrus refers to the 1967 song by The Beatles. John Lennon wrote the song, and based the walrus off of Lewis Carroll's poem "The Walrus and the Carpenter".
No, "sitting on a cornflake" is not a common idiom. It is a phrase from the song "I Am the Walrus" by The Beatles.
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The phrase trans ocean is meant to mean across the ocean. Trans ocean is meant to be the same as transocean, which is not a word but a shorter version of transoceanic, to which it is meant to have a similar meaning.
The phrase a wallpaper on your desktop can mean that your desktop is covered in papers. This can be meant on your computer or your actual desk.
The walrus is the predator
The phrase means that the question is difficult to answer. Like this one.
As far as I know, it comes from either "Alice in Wonderland" or "Through the Looking Glass" by Lewis Carrol
You smell heavenly or you smell very good :) Is this what you meant?
2 the alantic walrus and the pacific walrus
Whipping Walrus is an anime with a walrus in the cast.
A walrus is a vertebrate.
not much.