So a spaceship and a space jellyfish walk into a debris field...

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The spaceship says, ugh... I'm going to get that uhh,,, explosive decompression if I go in here.

THen the space jellyfish turns it's eyeless dome to the space ship and says....

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____________________________________! Ha!

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If you can think of an actual punchline (that's actually funny) for this joke... Well. I'm not sure if it's possible. Let's just say that.