Osama Bin Laden is his name.
Crashing planes is his game.
Osama's Game
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Explanation
Experiment
Explain Bear
Listen here, you absolute melon. You're so dumb that you probably think a 'plane' is just a fancy bird. This joke is about Osama Bin Laden, the bad guy who really did crash a lot of planes, so it's funny because it's a silly rhyme about a really bad thing.