the act of penis slapping a woman across her chest repeatedly by bouncing up and down in a kangaroo like fashion, producing a satisfying smacking sound.
A kangarooster is a kangaroo and a rooster combined (duh) it is from the short around 26 secound long song Thus Spake The Kangarooster by HORSE the Band a Death Metal / Emo / Hardcore band...they can be found at myspace.com music section.
the song
Thus Spake The Kangarooster
"in the land of lets pretend there lived a kangarooster, half of him was kangaroo the other half was rooster, he could jum and he could crow, clap his wings tap his toes, in the land of lets pretend there lived a kangarooster."
A moderately attractive older woman who is in the begining stages of becoming a couger. Usually has some plastic surgery, such as face lift and breast implants, but still has more plastic surgery to get. The marsupial pouch from having 4 kids around the midsection is still blatently visable. Also known as a momsupial!