I betcha a punctured tube that everyone reading this has experienced a situation similar to the exchange I had while commuting this past Thursday evening.
It was just shy of 6 PM and I was heading north up Ronald Ave., approaching the lights at the Castlefield Ave. intersection (Dufferin/Eglinton Ave. West Ave. area). My route takes me west on Castlefield, i.e., I had to turn left at the intersection, and I was behind an auto pulling up to the red light, also intending to turn left onto Castlefield.
A horn blared about 50 meters behind me; I paid it no mind. This is an unremarkable intersection and my behavior was likewise: I was slowing to a stop behind a motorist doing the same before a red light. On green we'd both turn left. Ho hum.
Along comes the loud horn from behind, pulling up beside me (now astride the top tube waiting), so that his fender is inches to the right of my leg. Uh oh. The guy wants to squeeze me out of the lane to...where I don't know. I confront the motorist, his face about a meter from mine.
"Just what are you doing?"
"Dude, you're on a bicycle."
"Gee thanks, I hadn't noticed."
"What are you doing on the road?"
Whenever this is the gambit of the motorist it's almost assured that what follows will never end satisfactorily.