C-A-S-T-E-R-O-I-L spells casteroil--casteroil 
The most indecent kind of medicine--medicine, 
The man who made it must have been a demon--demon,
C-A-S-T-E-R-O-I-L you see 
Is gloom on a spoon guaranteed to kill you soon, 
No Casteroil for me!