to Iob; is to use the ring and middle finger, of the left hand (important to not use the right hand), and pleasure a female. Origins of a young man who invented the Iob, not the first to perform it, that being a close friend of his, but the first to perfect it.
Ricky walks into a party and sees a group of bitches just chillin. So he walks up and grabs and her and says "bitch it's not your day" performs The Iob, fast and well. Girl is left pleasured and wanting more.
by Dirtyflow April 4, 2011
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Text speck acronym for "It's On Bitch."
Retard #1 texts Retard #2: "I don't appreciate what you said about my mother on your blog!"

Retard #2 texts Retard #1: "GFY"

Retard #1 texts Retard #2: "IOB"

Retard #1 and Retard #2 then beat each other up with golf clubs and baseball bats.
by Maniac in a Speedo October 3, 2009
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IOB is short for Influx of Bitches, a term used for when a large group or pack of girls enters a room, usually girls famous for being together or else anticipated by the people already in said room. Can also be used in reference to irritating girls, or to hot girls observed by bros.
Guy 1: Yo man, Cammie and all her friends just showed up!
Guy 2: Haha wow, IOB am I right??
by GingerAiled August 25, 2011
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Boi spelled backwards. It's what you call someone when they say BOI too much.
Clare: BOI! Why would you do that?

Will: SHUT UP YOU FUCKING IOB!!
by baredof May 11, 2018
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basically it's Yis Boi but in reverse
Are finished in the assignments?
Siy Iob
by yokaipiero January 9, 2021
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