What's an urban legend?
It's a story passed down from generation to generation depicting either good or bad results in the end and usually involve odd happenings.

I might have heard one, how do I find out if I have?
Ask around, if a majority of people have heard of it, then it might be it.

What are some legends?
-A man filling his "cheating" wives convertible with cement only to find out it was a gift for him
-A girl is sleeping in bed and leans over and dangles her hand over the side to make sure her dog is still around. The "dog" licks her hand. In the morning she finds the head of her dog hanging from her shower and the words in blood "Humans can lick too"
-Bloody Mary
-Candy Man