Pair of oafs each hiding baby's first toy (2-2)
I believe the answer is:
yo-yo
'toy' is the definition.
(I know that yo-yo is a type of toy)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for yo-yo that I've seen before include "Toy consisting of a spool and string" , "Toy - fluctuate wildly" , "Spinning toy" , "Toy made to rise and fall on string" , "An up-and-down toy on a string" .)