Was once a sign that someone belonged to the BDSM community but has do been popularized by the Alt community.
"Are you into _?"
"No, why?"

"Oh you're wearing a padlock necklace."
by Krose__9560 July 01, 2021
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A chain necklace with a lock on it. Commonly worn by eboys and egirls. You should stay far away from people who wear these, they are usually giant sluts or crazy.
Adam: Bro I started talking with this girl on IG
*Adam shows him her on his phone*
Sam: If you know what’s good for you, leave her ASAP, that bitch is wearing a padlock necklace.
Adam: What?
*Adam two months later*
Adam: I should of listened to him...
by ImSoNEW August 30, 2020
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