Refers to the chillier-weather hand-maneuver that you periodically perform when your digits get chilly inside your mittens; it involves withdrawing your half-frozen appendages from the glove's cold-moisture-soaked fingers and rolling them up into your palm to help warm them a bit more.
I had to handle wet items while running my errands around town during today's unseasonable snowstorm, so I was obliged to frequently perform the inside-of-glove fingers-curl so that my hands wouldn't go numb.
by QuacksO April 11, 2019
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when you curl your finger and put sugar on it an say to your kid fuck ya and faint
finger curl
kid: my daddy likes sugar so much he inhales it through his nose

Or

whoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
by Coollinks November 2, 2020
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