Oblivious

So, I picked up this ABC book from the library, and I didn't realize what it was about.
We got home and I started to read it, and it took me like 4 pages to realize it was about being gay.
I was confused by the use of "moms" and "dads" as plural.
I looked over the cover again and started to laugh because I realized how obvious it was. 
Upon closer examination, I thought this might be pretty insulting.
I know I would be offended by the way they chose to depict these couples. 
It's pretty stereotypical in a bad way.
Check it out.