Colon man: my father used to sing / recite what he said was a British Army marching song from Jamaica:

one step, two step, nigger man come,
brass chain thumping belly rumpa-tum-tum,
(repeat)
one step, two step, nigger man come,
ask him what the time and he look up at the sun,
with a brass chain thumping belly rumpa-tum-tum.

Not very PC. The reason given for looking up at the sun wasn't that the didn't know how to read the watch, but that he didn't have one: only the chain, making a show of wealth.