Cartoon version:
Cougar:
A Cougar is a 40+ stiletto favouring, leopard print spandex wearing hormonally spiked she-thing that wants to screw your balls out through your nose if you're unfortunate enough to be male, and just out of high-school. A Cougar can also describe scary spider grandmas like Madonna and soon to be Trailerpark trash Psycho-Coug: Britanny Spears. Definitely have their role in modern society. They set a prime example for the youthful girls who just can't hope to compete with the Cougar`s keenly refined preditory instinct.
MILF:
A MILF is your neighbour's high heel, tight skirt wearing wife (and mother of your best friend) who is coincidently home alone during the same day that you've called in sick to work. She happens to be outside at the same time you are and innocently asks you if you could take out some HEAVY several somethings from the garage to the curb. When you're finished and you're sweating and wiping your brow, she thoughtfully brings out a cold glass of lemonade. You clear your forehead with the cold glass and take several large gulps. Adams apple moving up and down with each swallow. You flash a brilliant smile when you hand the glass back to her manicured fingers. She smiles alluringly in return, tilts her head and asks coyly if you would like to take a nice cooling shower. She has some fresh towels set out too. "Oh dear," she says, one of the packages you moved left a stain on your shirt. "Let me wash that out for you.." she says. You obligingly follow her into the house. I personally don't know any (damn!).