How you know your 3 yr old is spending too much time with his grandmother

Landon is a lucky kid. 4 days a week he is with mom or dad for the day. For the other 3, he is with one set of grandparents or the other. On a side note, my in laws do not speak very much English, usually one or two word phrases, and those are limited. It's becoming quite a joke over the amount of Spanish Landon has learned, and the fact he is able to use it correctly. Just tonight " Momma, donde esta daddy? I need him. " He also has picked up some not so nice slang terms in Spanish that hubby uses :(. Uh oh!