wallpaper is kind of awkward as an adjective, too

Facebook chat can sometimes lead to miscommunications.
Just saying.

clara
band you might like- wallpaper
btw
David
? is wallpaper a verb?
clara
it can be anything!
except an adverb
i guess
David
well what did that phrase mean?
band you might like--wallpaper
clara
i'm saying there is a band called wallpaper that you might like
David
ohahahaha

Now, here's my question: what did the think I meant by that?

Love always,
Clara