.
Hey! Watch it!
Sorry.
Hey. Are you okay.
Clumbsy much
Say "Hi"
Keep your head down and walk away as fast as you can
Wave
Stand and stare at their beautiful face
Get over it and talk to him/her
Tell your friend to do it for you
Say "hi" and run away before he/she has time to react
Stare at them
Wait!
Here's an interesting quiz for you.