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1.
Yha
Youth hostel association- inexpensive accomodation for everyone
YHA
by Aims9511 January 28, 2009
 
2.
YHA
You have aids.

Just a random sort of thing to yell at someone if they're getting on your nerves and you can't think of anything else to say, or just for fun and to annoy people. :]
Person 1: "I hate you!"

Person 2: "YHA!!"
by Time-Warped June 19, 2009
 
3.
Yha
A word that one types when in a hurry and not thinking to brightly, usually in some type of internet chat window. It can be assumed that the individual that typed it was intending to type yah which in turn mean yeah or yes(indicating that the person in question not only accepts your answer but agrees with it)
SuperGeek: Chris Sucks!

SexyHotHippyMan123: yha.
by Aceshigh June 17, 2003