After a few minutes I finally figured out what Natalie was trying to say. Invisible camel is Natalie-speak for camouflage.
Here's a few more I've heard over the years:
dark milk = chocolate milk
offtapots = octopus
prepperbertays = pepperonis
cooked cookies = homemade chocolate chip cookies
horsey kisses = Hershey kisses
alligator = elevator