Top Definition
This is the product of your offspring (son) having sex numerous times with a lady that creates offspring out of wedlock. Thus resulting in a baby momma-law
Jeesh Anthony, why didn't you wear a condom! Now we will have to deal with that baby momma-in law for the rest of our lives!

I am so glad we have our grandson/daugther but our baby-momma in law is awful. Next time wear a condom, Anthony!
by Brooklyn Geo September 29, 2010

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