Whatch and laugh out loud
Ask if he/she is okay.
Glance for 2 seconds and giggle
Giggle in your head
Stand up and punch her/him till they bleed
Shout at him/her
Talk about it
Steal 100 dollars from them
Scream at them
Take it back
Forget about it their your best friend
Ignore them 4 one day
Ruin her hopes and dreams (pay back)
Here's an interesting quiz for you.