One of them, "Syn", had been living in the area since the late 80's and used the storefront as a regular location to drink (the owners tolerated him because he helped deter shoplifters & collect parking fees in exchange for cigarettes).
This guy was like a Puerto Rican Iggy Pop & fairly volatile even when not drunk; so it was easily evident that he wasn't someone to irritate even on a good day, but one weekend that Aussie kid was also drinking & kept needling him about not being truly hardcore. I remember said gutterpunk standing near the doorway, cigarette in one hand & beer bottle clenched in the other, and watching as the blood drained out of his knuckles. I had been waiting all day for something to happen.... and then it did.
That bottleneck imploded with a pop & in one movement with the same bleeding hand, he swung up the cinderblock he was carrying around as a sitting stool and bit a chunk off, chewed it once or twice, and spit the bloody slurry into the kid's face.
The Aussie guy just stood there spewing a steady stream of "oi mate! oi mate!", and I took the opportunity to take a quick break & closed the shop up (lest they migrate inside & break shit), then watched as they scuffled on the street's brickwork until Ybor cops happened along & broke it up (just as the gutterpunk had put the Aussie kid in a full overhead press).