The Rice University Neologisms Database

: Translates to “I too know.” A word used to describe an extremely focused and studious student who is often annoying. He or she usually takes immense pride in showing off knowledge by constantly answering questions and giving explanations unnecessarily. ITK is used the same way OMG is used in the U.S. It is a popular Nigerian slang that stands for “I too know.” It is used in referring to an extremely annoying person who takes pride in showing off knowledge unnecessarily especially in the class room. It can also be used as a verb, as one can say “Mary needs to stop ITKing before I lose all my respect for her.” ITK is used mostly by teenagers but since it has been in Nigerian English for a long time, most adults or older people even if they don’t use it know what it means or stands for.