Beaver + Duck =?

here's a story of our little inside joke today.

"..it was rainy and stormy night, deep in the woods, Mr Beaver made a mistake by doing "it" with Ms Duck. Ms Duck found out shes pregnant. Thus, the baby/mistake is called The Platypus. One heck of a rare Mammals.."

it was one beautiful mistake, comes a beautiful? Platypus? what?

EPIC love.