I think my greatest outplay against myself was while playing 
and trying to assassinate tristana. Eventually she just gave up on life and stopped to let me kill her, but I thought it was her rocket jump animation and parkour'd over a wall, leaving her with only a little health left.
Second place would probably be trying to flash away from a friendly 
ult.
As Kalista having a sure kill on a Vayne but jumping into the bush so that my autos wouldn't miss if she dodged in. She condemned me against the wall I had purposely put behind me. RIP.
Pinging that my ultimate was ready as Galio and accidentally setting it off. What proceeded next was a teamfight that I had a perfect ultimate opportunity that I could not seize because cooldowns.
We lost that match. I got a new mouse after that.
I flashed as
for a knock back towards 
only to find out it was the enemy with the same skin.
