you and your childhood friend who suddenly became an Assassin, were running along rooftops, doing flips and such things. Regular parkour. It was fun, just like old times but Ezio was slightly more agile.. faster and just overall better. He changed real quick.

"Hey! Can you keep up with me?" He Challenged as he suddenly started to sprint and jump over rooftops, hang on ledges and what not. He's pretty dam fast, you have to up your game to catch up with this Italian fella.