<human>: This happened a few weeks ago. I was preparing my bicycle for a 20-mile ride on a local bike/jogging trail. I was doing the usual, oiling the chain, checking the tire pressure, and on my shelf of car-care stuff there was an aerosol can of tire shine. I said "what the heck" and sprayed some onto both wheels. Later the next day when I was on the bike trail, I was approaching a steep downhill at over 15MPH (according to my little bike odometer) and when I pulled the brake handles, I didn't slow down. Apparently when I sprayed the tire shiner, some of it got onto that little metal ring that the brake pad presses on to stop the bike. So basically, my brake was covered in tire-shine oil and it couldn't grip the wheel to stop the bike.

Summarize the given text in a few sentences.
<bot>: I sprayed tire shine on my bicycle wheels, didn't realize I got it on my brakes, and when going downhill I couldn't stop because my brakes had tire shining oil all over them.