have kangaroos in your top paddock

have kangaroos in your top paddock

or

have kangaroos in the top paddock

AUSTRALIAN, INFORMAL
If you say that someone has kangaroos in their top paddock or has kangaroos in the top paddock, you mean that they have strange ideas or are crazy. Some people think I must have a few kangaroos in the top paddock. Note: Roos can be used instead of kangaroos. A guy who pretends to understand women has got roos in his top paddock. Compare with have bats in the belfry. Note: A paddock is a small field next to a farm or stable. The idea is of having wild animals there instead of farm animals.
See also: have, kangaroo, paddock, top