As a farmer it natural that you keep your best cows in the Top Paddock. If a girl is classed as Top Paddock material she is a big heifer, has a solid rump, and big thighs. Great qualities for your next BBQ but not as your guest!
Mate, shes in the top paddock, I wouldn't take her on a date anywhere.

She ain't no unicorn, shes in the top paddock for sure!
by Piano Player July 26, 2018
Get the Top Paddock mug.
An Australian colloquialism; describing someone intellectually impaired or moronic.
In the case of this phrase, the term "roo" is an abbreviation for kangaroo, an Australian marsupial.

Used emphatically, the phrase is sometimes amended to "a few roos loose in the top paddock".

To have a roo loose in the top paddock:

After John spent all those years on weed, he talked liked he had a roo loose in the top paddock.
by MrKapper July 10, 2006
Get the to have a roo loose in the top paddock mug.