Bad Tub

I'm in this old cast iron tub
Sinking fast
Not knowing how long
This is going to last
Along with a plastic duck
singing splish, splash
Rub, rub, dub, duh
I'm in with my nose 
below the water
All sounds muffled up 
Not so clear, not so loud
I don't want to hear
What I fear
All I can see
Is goose bumps
On my skin
And a rubber shark fin
In and out of my sight
I'm waiting for his
monster bite
Is this true or just shite?
Is it a bad dream?
Should I start to swim
Sink deeper or get out
And scream?