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1.
a replacement word for the 'S' word. Usually used when a teen is talking and notices that his/her parent is in the room.
bob- yo did you hear Jane is going out with John?
jim- holy (notices mom next to him) shnikeys!!!!
by habeb March 24, 2007
 
2.
Popularized by Chris Farley in the movie Tommy Boy, shnikeys is a euphamistic way to say shit. Although it is usually prefaced by the word "holy" it can also be used in other contexts. Sincere use of the word is considered hilarious.

Chris Farley claimed that his father used to use the word in his household because he never wanted to swear in front of his kids.
"Holy shnikeys! I've got ten burritos to make, and I'm running out of tortillas!"

"I didn't know that stacked shnikeys that high!"
by Nick Faber April 11, 2007
 
3.
A word to take the place of "crap," or "floosh." A mess up moment.
Holy shnikeys that was close.
by Vladen Kickme November 06, 2009
 
4.
oh shit. uh oh. shit. oopsies. oh no!
Shnikeys! I forgot to wear my pants today.
by okeydokeyartichokey November 28, 2007
 
5.
a replacement word for the 'S' word. Usually used when a teen is talking and notices that his/her parent is in the room.
bob- yo did you hear Jane is going out with John?
jim- holy (notices mom next to him) shnikeys John never told me that!
by habeb March 30, 2007
 
6.
A fucking kick ass word
Holy Shnikeys that spider is fucking huge!
by Jaems January 13, 2004