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4. IFE
Internet Fuckin Explorer. The world's shittiest browser written by a bunch of code monkeys with IQ < 16 at Microsoft. Known for breaking perfectly standards compliant websites and being a nightmare for web developers around the world.

Currently there exists three versions of this shitbag - IFE5, IFE6, and IFE7 -- all of them are non-compliant with each other. MSFT is now busy creating another of them -- IFE9!
Dude 0: What is IFE, dude?
Dude 1: Internet Fuckin Explorer, dude!
1. Ife
The name Ife means love in Egyptian. It is given only to females with enough gusto to handle it. Ife is very unique, and so the person with the name should be treated as such. Mispronunciation of the name is not tolerated, and so people who want to talk to someone with this name should learn how to say it first.
Wow. That girl is a rarity. Her name must be Ife!

Only an Ife would be prepared to take on that task.
2. ife
Usually originates from a Blindian heritage. Found to pay upmost respect to people of a Chindian culture. They tend to be wild and found slizzard.
They are so ife
3. IFE
Instantaneous Femcum Explosion
I'm going to fill a waterbed with femcum, then freeze it, and then push it out into the ocean. And I will call it an Ife-burg.
5. IFE
In Fucking Economy. This is an expression of dismay when a person fails to achieve a one-class upgrade on a very, very long flight.
OMG, IFE from Tokyo to San Francisco. FML.