Grungy-looking guy? Was he homeless, or perhaps the lead guitarist for Pearl Jam out for a stroll?
Anyway, years ago I worked seven days a week for our local homeless coalition and I saw and heard it
all.
Depending on how you were dressed, it really
could have been a case of mistaken identity.
Were you attired in a day-glo spandex leotard and futuristic-looking helmet, bent over the handlebars of an expensive titanium racing bike?
Or were you dressed more conservatively, astride a modest bicycle that a homeless person might, when glimpsing it from the corner of his eye, make a snap judgment that this is the bike that was recently stolen from him?
Life is rough on the streets. There is a never-ending, low-intensity war going on among the homeless. They steal each other's bicycles constantly. Since bikes are their only mode of transport, they take great offense, and many street brawls start when the aggrieved party spots his stolen bike being ridden by another. Been there, seen that!
Also, some of these guys are extremely nearsighted, and eyeglasses are among the first possessions lost in this lifestyle. In our town we have an optometrist who gives free eye exams and glasses to the homeless. I used to drive guys to the office for this service, and a week later, the glasses were lost! Oh well...
So, maybe you were mistakenly accosted by a nearsighted homeless guy trying to recover his stolen bike.
Just a scenario suggestion. You were there. I wasn't.