What is reverse psychology?
Reverse psychology is when you do something and hope to get the
opposite reaction. For example, if you wanted to get someone to
take what you were offering, you would say they couldn't have it.
This is often used with little children. For example, you want
your child to have some salad. You put it out to all members of the
family at dinner time but tell your child "you can't have any of
this tonight". Often then, the child will demand to have it!
See the link below for a description with examples.