Here’s Usher’s baby boy Naviyd Raymond refusing to crack a smile as he went for a stroll with daddy and big brother Usher V in L.A. yesterday.

We can’t possibly imagine why little Naviyd was so serious, even though his brother seemned quite excited about something.

And Naviyd wasn’t the only one being super serious yesterday.

Here’s little Louis Bardo looking mean, as always…

And Nahla mean muggin’ while walking home from schoool withe her daddy.

What could these three little people possibly have to be this preoccupied with life???

WENN/Fame Pictures/PCN Photos