I received a challenge on Twitter yesterday via a friend, @hamstall.
It said :

@mynameisedd: The first rapper to make a rhyme with “carbaminohaemoglobin” will get my eternal respect.”

I couldn’t resist, so here’s my response.

CO2 gets bonded tight
Locked in your erythrocytes
Harbour me no fear or loathing
Carbaminohaemoglobin