BooSki Share definition Flag A street wise male friend is your BROski. This is the female version. She's not my girlfriend, she's my booski. My ride or die chick. BooSki by #LeadersOfTheKNEWschool April 3, 2016 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug