speed ball Share definition Flag It's a mix of heroin and cocaine and is ussually injected you havent tried nothin until youve had a speed ball speed ball by Kari January 1, 2004 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