Not quite on the same thread but a song I heard many years ago had a number of verses similar to the limericks viz,

My uncle 's a country physician
with instruments slender and thin
He only performs one operation
By gum how the money rolls in
rolls in rolls in by gum,,,,,,,,,,, in.

My aunty runs a girls' seminary
saving young girls from sin
she'll save you a blond for a tanner
by gum how the money rolls in
etc