I want to get my friend back, please help?

so my friend put water in the mustard bottle so when i went to put some mustard on my sandwich water came out and my sandwich was soggy!! >:( i want to do something to get him back.. i was thinking maybe put tacs under the sheets of his bed, or since he is deathly allergic to bees put a shaken bee hive in his car, or fall from the ceiling of the garage when he gets home and hit his face with a hammer, or something like that... which one sounds best?!