to use the excuse of having a violent allergic reaction to jellyfish to skip school for a day to either finish any previous unfinished homework or not take a test when everyone else does to get answers upon returning to school the next day.
Bill: Where's John? We have a huge test today.

Phil: He told me that he was going to pull a jellyfish because he didn't study last night.
by An Interesting Name October 21, 2009
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