Jeff is a state of being. Not simply just a name; A state of existence higher than nirvana.

a fabulous name, anyone who has it should be proud, spontaneous (good in bed) ;) usually very sexy tall & thin (except for the few UNLUCKY Jeff's out there)

Jeff is someone who you will fall deeply in love with. Mostly a great guy with an awesome personality and who only cares about you. Jeff is sweet, smart, funny, and very handsome. Just never let go of a Jeff once you have one, because it will be the worst mistake in your life. All the girls would call you bad names and try to pull you guys apart only because they know your love is better than anything they've ever had. ---unless you are an UNLUCKY Jeff. Sorry):

A Jeff is a really cool kid who everyone loves.
Someone with a fantastic everything.
Everyone's best friend.
A Jeff will most likely often be cheerful and can always put their friends in the best of moods.
This person can make British Guard People giggle in about 3.7 milli seconds.
Jeff's have awesome dance skills and great hair.
Although Jeff's are magically perfect, they will make you feel super about your fat ugly self. And you will never feel ewwy.

someone who is skilled. He just has it.

One of the coolest people you'll meet! Super silly and witty. Jeff will always put a smile on your face. He's one hell of a dancer and knows how to partay too! A total "people person". He's got a gang of friends and everywhere he goes people recognize him, bow down in worship and kiss his feet. He's just that cool. Jeff also possesses amazing artistic skills and is likely into dub-step music and hip-hop.
He's incredibly charming and will cast his spell on you. Dude's got a few tricks up his sleeves. Fa sho. ;)

Jeffs are great guys with an awesome personality and will always be there for you and only make genuine mistakes (not the bullshit ones you hear from other guys) and who truly cares about you. He will do everything in a relationship to make it work and means what he says with all his heart.

A true gentleman who can make you feel happy in the saddest of times. Jeffs are known for their hilarious imitations of certain characters and people. However, one must be careful around a Jeff, as they are prone to unannounced tickle battles and usually (99% of the time) win. No matter where he may go, he is always loved by all. He can be wild but always knows when to take something seriously and can always be talked too, is always striving to to his best and can be relied upon for ANYTHING.
When taken the right way, Jeff's wildness can be uplifting and joyous. Jeffs learn from their wrongdoings and strive to be better people, protecting those that they love.

Jeff is also a name given to perhaps the only people with the capability of defeating Chuck Norris. When Chuck Norris needs help, Jeff is the person that he will call. Jeff is the one that keeps Chuck Norris in line and doing good.
It is said that Chuck Norris is the apprentice, but Jeff is the Master. Yes, Chuck Norris can be defeated (if they for some reason they were no longer best friends), and will be by Jeff.