the act of multiple bovines suspended in mid-air or in mid-air motion. used as a way to compare with something seemingly impossible or unpermitted by authorities.
A: hey, do you think your parents will let us borrow the car so we could drive halfway across the country to see that adults-only Metalheadz concert? B: Yes they will...and cows fly.
by Spritaek April 8, 2011
A low level flying creature of the Badlands, very much like spotted cows. They may look, and act like buzzards, but oh no. No... you are mistaken. These cows are clever and use jet-packs.. or maybe tiny and invisible flying mounts.

*note* Mounted flying cows cannot be mounted, and they WILL follow you. Be warned.
Wuntvor: I'm going to go over there.

Flying cows: I will follow you.

Wuntvor: Noooooooooo.

Flying cows: Ha. Laugh. Ha. Laugh. Ha. Moo.
by Aeirion, Mmmmm.. that guy. February 28, 2009
A Cow that fleis through the world with a silver foot as it's guide. It has no mother or father as it was a clone made from the poop of another cow. He sometimes fights the evil squirrels of Gogo Bootopolis. He is the leader of a major religion (Cowism maybe you have heard of it).
WORSHIP THE COw!!!!!!!!!!!!!!!!!!
by JapanLover October 1, 2004
Flying cows are extremely rare, of course. This is an expression of supreme self-confidence. One who is able to "steer" the conversation without being a "bully". This may seem "udderly" ridiculous but it's still "hay-larious".
"Sure, my cows can fly. They need two seats and don't fly as much as they use to but sure, they can fly."

"Oh yea? My cows can fly."
by MyCowsCanFly February 6, 2007
a phrase used to mean "normal and civilized (however one defines these words) people don't behave the way you do.
a boy, after having been to physical science class in elementary school and having learnt the basics of what electricity is, comes home and tries putting scissors in the kitchen plug.

His mother starts screaming at him:

mother: is this f-sag you twit? what are you doing, you'll create sparks and burn the damn house down. Pigs and cows don't fly. Go to your room now. She then takes a broom and starts chasing him around the house.

son: I can attach balloons to anything i want, (turn anything I want into a fad or trend) no?
by Sexydimma February 29, 2012