A Retitling Session

We marry a girl who is, in no way, our sister
Or a girl marries a boy, in no way, her brother
How come, we call father-in-law and mother-in-law
Or a sister-in law or brother-in-law?
Let us retitle the whole genre as this, why not?
Uncle-in-law, aunt-in-law and cousins-in -law.
And not son-in-law or daughter-in-law,
But nephew-in-law and niece-in-law.
Nothing we loose by this dispostion
We gain a lot for our mother, who only
Knows the ultimate truth and as it comes
From the horsemouth, granted, we take it for.

Father is the Supreme Truth;
Mother has the Universal Appeal.
A begger in the street yells for alms
Only to mothers and his mom's pride in tact.

Address your Father-in-law only as Uncle
Address your Mother-in-law only as Aunty
And all the other siblings by name only,
For, we are not incests to marry our siblings.