A limerick is 5 lines - the 1st,2nd & 5th rhyme.
the 3rd and 4th rhyme differently from the others.
There once was 2 FREEQs trying to rhyme
Limericks one at a time.
They’d bicker and fight
About who was right.
when what they actually presented was a crime.
But as a fellow Illannoyan, ex Marine and Vietnam Vet you have my highest respect and admiration.