Number 1 is the lie; I did this to my brother, not the other way around. To be fair, though, I distinctly remember arranging a nice pile of leaves below him to cushion the impact of his fall, and the bone he broke was a very small one! On the other hand, he was only three (I was six), and using him as a guinea pig to determine if the same jump would be safe for me was probably...um, not a very nice thing to do?
Also, if anyone is interested, a butt-tongue looks something like this:
:( :( :(
G: Athena Laurel, Cyra Lenore, Daphne Cordelia, Junia Margot, Penelope Susanna, Theodora Ivy, Tullia Victorine
B: Arthur Lane, Blaise Prosper, Cormac Ulysses, Desmond Emrys, Ferdinand Atlas, Panos Dimitri, Robin Emeric