Buy yourself a set of allegator clips or jumper leads.
Wait until your mate is asleep or passed out.
When your mate is asleep get the jump and put it on their nipples/buttocks/toes anything.
Wait and see how long it would take them to notice this.
- DO NOT AND I REPEAT DO NOT HOOK THE JUMPER LEADS UP TO A BATTERY OR IF IT IS A JUMPER LEAD PACK DO NOT TURN IT ON.
- DO NOT DO IT TO YOUR GIRLFRIEND OR ANYONE SPECIAL.