TIL about anti ninja floors in Japan. They were purposefully made to squeak as to alert people of intruders. science.howstuffworks.com Submitted by tpb01 t3_yf8hvz on October 28, 2022 at 12:32 AM in todayilearned 187 comments 5,566
FattyCorpuscle t1_iu2bbfx wrote on October 28, 2022 at 12:56 AM TIL I have an anti-ninja house. Permalink 14
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