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A form of women's apparel that features two human hands covering the breasts.
Dude, go give that stripper a handkini.

My girlfriend was changing her shirt yesterday, so I quickly gave her the handkini.
by Smppc86 August 09, 2009
When ever a girl will place one arm over her nipples/boobs and the other over her private parts to get somewhere quick if she's naked. Only used to get around house.
1: Ugh I saw my sister in a handkini.

2: I had to wear a handkini out of the bathroom.
by Gluppy July 16, 2014