Vera Baxter, 49, fought to control her VW Golf and thought she was going to die as it veered on to the wrong side of the road, a court heard.
She failed to free her uggs on sale and police in a patrol car had to swerve to avoid her as she smashed into an oncoming Mercedes, causing the driver whiplash injuries.
She then ripped the ugg boots on sale from the pedal and crawled from the wreckage.
After being treated for cracked ribs, she was charged with dangerous driving.
A judge at Manchester Crown Court said she bore full responsibility for the midnight smash because of the risk of driving in the Australian ugg boots on sale, which cost around £165 a pair.
The English teacher at Stretford high school in Manchester told how she was on the way home in the city a year ago when she lost control.
She said: “I suppose it was a freak accident. As I put my uggs on sale across the prong of the pedal it caught in the seams.
“When the crash happened the airbags came out and I smashed my head on the steering wheel. I could smell petrol and thought the car was going to catch fire. I thought I was going to die.”
Judge Martin Steiger, QC, said: “It was the defendant’s choice of uggs on sale that made her unable to control the vehicle when the crisis arose. This crash was entirely foreseeable.”
Baxter admitted dangerous driving and was banned from motoring for four months and fined £350.
Drivers with unsuitable footwear have caused a string of accidents. An AA spokesman said: “It is common sense to be wearing appropriate ugg boots on sale.”