Be seated. Hold a deck of cards in your right hand. Proceed to slap yourself continuously with the left hand. Stop. On your left and right cheek appear two symbols: a number and a suit. The card is then revealed to be face up in the deck.
Patter Subject
Domestic Violence, Parental Abuse or BDSM.
Sketch Idea
This could be transformed into a sketch where a boy keeps trying to impress her loved one through very apparently painful means. Or, instead of using a single timeline, you could show this boy growing up and doing these kind of acts to different girls along his life up until he is old (this sort of approach will allow you to combine a much more rich variety of emotions in your sketch).
He could use the knife through hand to reveal a heart in the blood.
If she falls on the ground during sports class, he falls intentionally to reveal to her his wound to have the shape of a smile face.
CLOSE UP on the boys wound as the voice of the boy is heard in the background
"It's ok if you get hurt from now and then. All you have to do for the pain to go away is just smile."
He can use the needle through hand to make her stop crying when she sees a documentary about Jesus.
When someone else gives her a flower, he takes the flower and transforms it into a cane. You can spin this in any way - maybe a thug is trying to give her a flower and force her to come with him and the main character transform the flower and starts beating the thug. Or you could have him do this out of jealousy.
He could do the face stigmata when she finds out he cheated on him and the cheek reveals the words "I'm sorry".
You can even stretch this out a bit and make it into a theater play.
Take it from here.