A hilarious baby shows how not to be a momma's boy – by defiantly replying ‘Dadda’ every time his mother prompts him to say ‘Momma’. Greyson Howard, aged 10 months, was sitting in a shopping cart as mom Summer asked him to say "Momma" over and over again at their local Walmart. Each time, though, Greyson would simply reply, "Dadda" – much to his mom's amusement. Summer, from Mooresburg, Tennessee, captured the moment on September 5, and despite Greyson’s antics, she said he’s still a momma’s boy at heart.