My favorite color

Alas, my favourite colour, Brown,
Often makes my mother frown,
She's been known to get a fright,
When she sees the smelly sight,
Of crusty undies caked all spotty,
And little bits beside my potty,
You silly boy! She shouts so loud,
But secretly, I'm pretty proud,
The stinking trail I leave behind,
Embeds itself into the minds,
Of Mum and Dad and Gramps and Gran,
It's bearing fruit, my little plan,
By stinking out our little home,
I'll hopefully be left alone!