The japanese word for "panties" (panties in a japanese accent) that since Chii from the series Chobits (CLAMP) has said, has spiraled into another form of slang for wannabe-asian otakus. Other examples of these incidents are phrases like "kawaii desu" and "konnichiwa."
"Chii wears pantsu!"

"I am such a cute anime girl nya I wears me some pantsu!"
by Little Rabbitface June 12, 2005
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Wow, he has a complete and total fetish over pantsu.
by Starchaser November 12, 2003
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1) Literally just pants adopted into the Japanese language; the final u is largely muted.
2) Female underwear. Likely to mean this if said in English with the final u more pronounced.
1) Mika was a bit of a tomboy so she often wore pantsu instead of a dress.
2) Aiko seemed feminine since she commonly wore lacy dresses, but once I harassed her after two much sake, her pantsu beneath such a dress were among the last things I saw before her high roundhouse kick knocked me and several of my teeth right out.
by Bahmo May 26, 2019
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Japanese for "Briefs" and/or "Male Underwear"
"Pantsu! Pantsu! Pantsu!"
by AnonTifa! January 2, 2005
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A badass Japanese anime character who swings his axe at you, his best friend and nemisis is Kumasan
"I'm Fujimora Pantsu and I swing my axe at youuuuuuuu!!!!!!!!"
by fujimora pantsu January 21, 2012
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The Pantsu Clan descended from the elder of the two children entrusted by the Sage of the Pervertness and Pantsu Snatching with his power and will. when it came time for the Sage to choose a successor, he questioned the two on what course of action they would follow to bring order to the world. The elder believed that might was the way to bring pervertness, while the younger believed panty snatching was the way.
All Hail Pantsu Clan! Pantsu! Pantsu! Pantsu! :D
by Kentotz The Pantsu Leader February 1, 2011
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A wholesome asian chick that runs a great meme page.
"Pantsu._.sama has a very wholesome page"
by June 22, 2018
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