One person is laying on the floor. Two other people walk up.
First person: "Hey this guy is hurt." he goes and checks his heart beat.
First person: "No heart beat, help me do CPR"
Second person goes down and starts pumping on the chest and the first guy does the mouth blows.
Do this for a little while.
Second person: "I'm getting kind of tired here I think it is time to switch."
First person: "OK, ready"
At this point the person on the ground gets up, one of the other people goes down and they start doing CPR again.
There you go, this is a good skit to do with leaders.