Super Samson Simpson

I am Super Samson Simpson,
I'm superlatively strong,
I like to carry elephants,
I do it all day long,
I pick up half a dozen
and hoist them in the air,
it's really somewhat simple,
for I have strength to spare.

My muscles are enormous,
they bulge from top to toe,
and when I carry elephants,
they ripple to and fro,
but I am not the strongest
in the Simpson family,
for when I carry elephants,
my grandma carries me.