the inference is that hankins a man of the mean streets has a well earned reputation for slamming his opponents onto the pavement rendering them unable to function.
Itre sounssive, eve intimidating until you realise this is brain wood Healy homo hankins who can't fight sleep and has only a full L column in his battle resume. Then it soundalike someone trying to scare people off fighting him so he doesn't get his arse kicked. Again.