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I know it's for accessories that don't fall under head,torso and legs portion of the body. Shouldn't underwear (パンツ) be used with はく？
I saw it in a J-drama where a girl says パンツがつけてない to make the guy get a nosebleed.
The normal verb for パンツ is はく. パンツをつける is highly unnatural, but パンツを身につける is acceptable (although wordy). I think you have misheard something.
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