jellyfish in a pool

ever have those moments when you just spontaneously recall a memory that has no apparent relation to anything going on in life whatsoever? i was driving to taco bueno tonight and this memory hits me of being in a hotel swimming pool in atlanta on a family vacation and feeling something brush against my leg. i look down and don't see anything. it happens again, more than once, and for the life of me i can't figure out what is happening. a jellyfish in a pool in georgia? can't be. and then finally i reach down around my legs and pull up a clear plastic party cup. i couldn't see it - it blended in perfectly with the bright blue chlorinated pool water. what does this mean? nothing? everything? weird...