Toy is not enough for the two of you (2-2)
I believe the answer is:
yo-yo
'toy' is the definition.
(I know that yo-yo is a type of toy)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for yo-yo that I've seen before include "Go up and down many times" , "Fluctuate repeatedly" , "Spinning toy" , "Child's toy on a string" , "Toy (with ups-and-downs!)" .)