Tonight your mommy taught you a new word that you think is immensely funny. While you were getting a diaper change, you kept poking her in the chest and asking “Wha’s dat?”. She avoided the question and continued to defer your curiosity with “That’s Mommy”. When you continued to insist, she finally broke down and said, “That’s my boob”. Not the best choice of word, but apparently you found it HILARIOUS since you began to chant, “Boob, boob, boob” and laugh wickedly.
Even after daddy got home, the word still retained its humor. Here you are enjoying the word “boob” and saying some other new words.
It's Campbell Time! 
Love it, that’s my grandson. love you , grandma.