Analysis of A Dentist and a Manicurist

A dentist and manicurist married
They fought tooth and nail
The weirdest part of it all
Is the dentist worked by braille 

See the dentist was blind 
And the manicurist smelled foul
But it just blows my mind
How the dentist did root canals

Sometimes when he numbed patients
The needle pierced their tongue
Sometimes you would hear screams
From patients that were very young
 
But overall the dentist did ok
In his cool dark sunglasses 
But people started staying away
From this blind dentist in masses
 
Maybe that is why this marriage 
Did not continue or endure 
The manicurist took one step ahead
Living pretty well on pedicures
 
The blind dentist went under
He took time off and took a trip
What's crazy is when he came back 
He became captain of a cruise ship

Somehow he steered a cruise ship
Somehow he did not fail
It really blows my mind
How good he was at braille