what does it mean??

what does it mean when you are at the library for story time and your son turns around and gives you the stink eye until you stop singing? even though all the other moms are singing. i was not the only one, but i guess kael was not impressed with my efforts. he was also my only child, that as an infant, would scream like someone was pinching him any time i would try and sing to him.
guess maybe he is trying to drop me a hint!