No no no

Shawn has managed to vocalise NO yesterday. During dinner, I supposed he had enough. He turned one side on his highchair, whined and twisted. Then I heard No, no, no. It wasn't very clear but it's audible to a certain extent. Then during bathtime, I picked him up from the tub, as usual he whined and twisted again. In the midst of showing off his frustration, he added No, no, no.