What is the error in CONTENT'S ARE FLAMMABLE

"Contents" shouldn't be a contraction because when it is it creates an incoherent sentence For example, with the contraction removed, this says "Content is are flammable." Sounds like a toddler said that, right? "Content" should change to it's plural form for this sentence to make sense again.

There is a apostrophe in CONTENTS. There is not supposed to be one there.

Explanation:

When you have an apostrophe you are saying that something belongs to you.  

OR when you are saying "he is" you would probably say He's" (Sorry I forgot what that word is /:)

second person

explanation:

note the heavy uses of "you", "your", as well as "he".

~