We still have no idea what exactly a "fixie" bike is (and at this point, we think we're having a better time imagining what one looks like than just walking out to Ritual Coffee and seeing one for ourselves), but we know they're destroying San Francisco bike culture -- just like Matier and Ross! The boys follow up their sensationalistic "Critical Mass attacks children" article from earlier this week to relate the tale of another dustup from a car driver about last week's Critical Mass bike ride.

SFist reader obviously_human was there and sent along these pictures from the confrontation, one of which is above. (A poster on the SF Junto was there too, and gives this version of events.)

M&R's reported version of events, after the jump.