What are some awesome school lock ideas?

What's a good prank to play on your friends at school?

• Last term my friends played a this horrible practical joke on me. It was a very original prank. Well me being the observant genius I am, was oblivious to them performing the prank literally right in front of my face. I was just dumbfounded and looked like a real knob. I'll tell you the prank... So my best friend likes to take my key (belonging to the lock on my locker) and hide it in her pocket while i'm getting my books for class. Then I go to shut my locker and the key is missing. I know she has it though, we laugh, she gives it back and then we move on to class. But one day she decided to kick her daily practical joke up a notch...... or 20. I was digging for my history book in my locker and when I was finished I was ready to lock up and my lock was gone instead of dangling from the padlock. I asked my friend to give it back and she's like "I don't have it" She is a very convincing liar and put on a worried and shocked face and said "It's in your locker!! Oh my gosh you didn't shut your locker did you!!!" O.O. I thought she must of put it in there and then forgot to tell me. I was hysterical! I was running around like "OMG OMG OMFG!!." I did have a spare key but guess what.... it's on my key ring with the other key!! I rushed around trying to find help while my friends were with me feeding off my pain. I went to the administration and told them I think I accidentally shut my keys in my locker! They told me to go to the coordinators office. So was about to go over there when my best friend takes the key from her pocket and dangles it in front of my face. Oh my gosh how I was humiliated. They laughed at me and were like "Oh HAHAHA I can't believe you didn't see us passing the key around in front of you!" So any similar pranks I could play, ya know ones that you can do at school that don't require much effort but buuuurrrrrnnn for eternity. Any ideas!!?? Thanks!

• Answer:

  **** in there bag ;)