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MASSIVE SEAWEED RULE!!!!!
(sh.itjust.works)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
This is normal everyday stuff in Japan! Not meaning to minimize what you found, it's pretty cool that you found that in a local Walmart, but this is an everyday thing in my house.
Tip: Cook some rice, wrap in nori, eat, yum!