Helko is a word in today's culture meaning basically the same thing as hi, hello, hey etc. If you type it many ignorant people will think you made a typo. This word is used to add pizazz to a normally boring greeting. If you say it people might be confused because they are not as hip with the lingo today.
Person 1: "Helko stranger friend."
by hellocosmonaut December 13, 2009