It basically means distgusting or nasty.
The icky poem is as follows Icky icky icky im so icky icky icky icky just like ickkyness icky icky icky this peom is on wiki icky icky ick! illi ick!
It's just icky I think
Have you checked the seat of your pants?
Icky Flix was created in 2001.
That is the correct spelling of "icky" (repulsive, messy).
Sticky Icky was created on 2007-05-15.
Icky Thump was created on 2007-06-15.
Icky Mettle was created on 1993-11-23.
Icky-Poo Air Raid was created in 1997.
Icky Thump - song - was created on 2007-04-26.
grossdisgustingyuckyappalling
If you are referring to the song by Christina Aguilera, she is singing about bugs, and says "icky icky na na," not "ichy ichy na na." Icky is a word that is used to express disgust or dislike of something. Na na is just a nonsense word used sometimes in music, similar to "la la" or other nonsense words that really don't MEAN anything, but that are used because the tune needs some kind of words in that spot!