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
yParticle t1_iu2alxg wrote on October 28, 2022 at 12:51 AM Favorites of upstairs neighbors everywhere! Permalink 23 vitonga t1_iu2bmn4 wrote on October 28, 2022 at 12:58 AM Obligatory Permalink Parent 10
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