A hair tie or hair elastic. The term 'hair lacky' is an amalgamation of the words 'hair tie' and 'lacky band'. Lacky band being a shortened version of elastic band or rubber band.
"Hey, do you have a spare hair lacky? I've got P.E. next and I don't want my hair getting all messy."
"Nah, sorry mate. I've got a lacky band but their super painful to use instead of a hair lacky."
"Nah, sorry mate. I've got a lacky band but their super painful to use instead of a hair lacky."
by ~Emmsies~ March 8, 2017
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