I always suspected kangaroos thought they were better than me. Now I know why: Three vaginas.

This set-up is shared by all marsupials – the group of mammals that raise their young in pouches. Koalas, wombats and Tasmanian devils all share the three-vagina structure. The side ones carry sperm to the two uteruses (and males marsupials often have two-pronged penises), while the middle vagina sends the joey down to the outside world.

So they've sprouted three vaginas (GREEDY) and taught them to juggle. But before you get all jelly of marsupials, human ladies, check this out:

With its complicated reproductive set-up, a female kangaroo can be perpetually pregnant. While one joey is developing inside the pouch, another embryo is held in reserve in a uterus, waiting for its sibling to grow up and leave. Indeed, a mother kangaroo can nourish three separate youngsters at a time – an older joey that has left the pouch, a young one developing inside it, and an embryo still waiting to be born.

'Becoming a Republican kangaroo' just topped 'sticking my boobs in a woodchipper' on my list of Things to Avoid this Labor Day Weekend.

Thanks and shudders to Slog tipper Velho.