Split the crib is an expression stating something is easy or was easy and simple to accomplish.
There is no record of a saying "split the crib". Maybe you misheard the person? The only meaning found is the literal one; splitting (or sharing) a baby crib between two babies.
Czechoslovakia, on January first, 1993! !
The Uranium atom is split by firing a Neutron at it's nucleus.
Cedar is a very friable material, meaning it crumbles & breaks. It is a hard wood...
Split is the largest Dalmatian city, the second-largest urban center in Croatia,...