I'm being swallered by a Boa Constrictor
A Boa Constrictor, a Boa Constrictor
I'm being swallered by a Boa Constrictor
And I don't - like snakes - one bit!
Oh no, he swallered my toe.
Oh gee, he swallered my knee.
Oh fiddle, he swallered my middle.
Neither does Indiana Jones!  Our primal fear of these legless reptiles is one biologically ingrained in us from the days of cavemen thousands of years ago (perhaps, then, it is not surprising that  “coldblooded”  – another adjective which applies to these slithering creatures – can be used to refer to something that is heartless or evil) 

The Boa Constrictor