strongholded by Starbucks

I went into the Starbucks on 86th Street in Bensonhurst, Brooklyn and found by the counter, a sign which read:

Two Mom's in the Raw
Try their snacks!

I tried to take a picture of this printed sign, and was told it was not permitted. I did anyway, and was forced to delete the picture from my camera and thrown out! I immediately googled this company to find out whose English teacher actually sucked. Was it the Moms'? Was it Starbucks'? I wrote this company an email, explaining who I am and how Starbucks misrepresented their grammatical skills. We'll see if they write back.

Hey Starbuck's...

I doubt you'd like it if I gave you an apostrophe.