ELI5: Explain Like I'm 5

Bicycle trailer

A bicycle trailer is a special kind of hitch that attaches to the back of a bike. It has two wheels, and a place in the middle for carrying things like groceries, sports gear, or even little kids! You hook it onto the back of your bike and then when you pedal, the trailer follows behind your bike. It's like a little wagon that you can take with you wherever you go!
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