When a loser (scrub) impregnates a woman that earns a higher income, drives her to the point of insanity, so much she shaves her head, then gains custody over any offspring and then receives child support from the mother.
After he took her to dinner, she spent the next 12 months getting federlined.

You just got federlined, Bitch!
by Mike Amelsgone June 26, 2011
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When a girl starts off relatively decent, good morals, good job, lack of slutty tattoos but then starts dating a trashy guy and slowly declines to his level of trashiness.
Britney Spears

"Sheila was on the honor roll until she met Chris, now she's got a tramp stamp and has a beer gut at the age of 19."
"Yeah, he straight up federlined her."
by DylanYork October 15, 2007
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Any male between the ages of 17 and 30 who is a complete loser. Considered a man child and a human sponge. Lacking any real talent or education.
A Federline finds women with jobs to support him. His M.O. is to get his victims pregnant and to confuse them with romantic "pipe dreams". Otherwise known as a leech, a real Federline will use just about anyone he can. Lacking any formal education, he usually goes through life being a wannabe or poser. He usually ends up being a male prostitute
Kevin Federline is the inspiration for this term. Homeless, jobless, and talent less. He gets women pregnant in order to secure his "meal-ticket".
by Bode December 10, 2006
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(verb) To latch onto someone else's money, talent and fame, while offering nothing of yourself except your (dubious) talent (in bed). to stop washing one's own hair (and possibly to stop bathing entirely), start wearing manpris, untie one's shoes and skank all over the place, doing nothing to pull one's own icky weight, unless spawning is considering a . Federline, to Federline, Federlining, Federlined, etc.

Can also be used as an adjective.
1. Ewwww, look! He's Federlining all over that girl!
2. I don't know; Ben Affleck's just become too Federline for my taste.
by Xenu2001 April 12, 2006
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Unit of measurement used to determine how much of a douchebag you are being. 1000 Federlines=1 K-Fed
That guy is a total douche, I bet he is about 800 Federlines.
by Spacemonkey Mafia April 13, 2008
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A hot or rich woman who has been knocked up multiple times by a man whom is not as hot or rich as she is. This is normally for the man to try and gain a lifetime of involvement with said (rich/hot) girl who would have probably just dumped him in a year or two if not for the kids. Getting "federlined" can sometimes lead to a hot woman not being so hot anymore. This has been named after Kevin Federline whom did this to Brittany Spears.
I'm gonna federline that hottie and no one will want her anymore, she will be all mine. Sally got federlined yo!
by jmaybes September 5, 2020
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