Top Definition
When a farmer tosses off a male cow and gets the jizz and injects it into a female cow.
Guy: Hey babe lets do some selective breeding.
Girl: What...?
Guy: You can be my farmer and i'll be the cow.
Girl: Ooh okay...
by tagme246 February 28, 2008
1 more definition
The process a bloke undertakes when he leaves a woman at the alter in favour of a lady more likely to give him beautiful children.
Eric: Did you here about Johns Experiment?

Stuart: Yeah he left Jenny on their wedding day for Ashley with the perfect bum to boob ratio, right?

Eric: True! How's that for Selective Breeding!
by Spacemariles June 07, 2013

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.