Old Indian, standing on the corner.

Really good looking woman passes by, on her way
to work.

The Indian raises his hand in greeting, and says,
"Chance!"

The same thing happens several days in a row.  The
Woman walks past and the Indian raises his hand, and
says, "Chance!" 

Finally, one day, she just can't ignore it any longer
so she stops and asks the Indian, "You're an Indian,
aren't you?" 

He nods to the affirmative.

She says, "I always thought Indians said 'How!' as a
greeting." 

The Indian says, "Already know 'how'.  Just want 'chance'."