Some known, and not so well known Facts and Lore:
Lore: The Beatles were the greatest Rock n Roll band ever.
Fact: The Rolling Stones are the greatest Rock n Roll band ever.
Don't you diss my Beatles 
Lore: “Alice bites head off a chicken and drinks the blood.”
Fact: It was evolution that doomed the chicken that fateful day. Someone threw a chicken on stage and Alice Cooper not knowing it was fight-impared through years of evolution threw the bird back into the crowd and they ripped it asunder.
I think I remember that one. There was also the story of Ozzy Osbourne biting off the head of a dove.
Lore: Bear provided acid for the Grateful Dead.
Fact: It wasn't some wild bear loose in a forest that cooked the LSD, but a wild cat named Owsley Stanley.
It was a guy named Bear of course. God knows what the Dead was into in those days.
Lore: There was the rumor that Mama Cass Elliot died from choking on a ham sandwich.
Fact: They never could prove who choked Mama Cass while she was standing on a ham sandwich.
Actually, Cass simply died of a heart attack. Whatever became of the ham sandwich, we'll never know.
Lore: He was Data's brother.
Fact: Lore was a bit of a jerk.