YARN-What's wrong with this picture?

I ride an exercycle every morning for 30 minutes.  I noticed that it was not peddling like before and wondered if it needed more 3 in 1 oil. Looked at it in the light and here there was yarn caught in the mechanism! Where the heck did that come from? I figured when I vacuumed the area The yarn must have stayed on the brush and transferred to the exercycle. Then I looked closely and it was a friendship bracelet I was working on. ha ha ha.