Stopping flaming your Blitz/Thresh when they miss a near impossible hook
If I'm playing Thresh and missing a max range hook, I probably never though I'd hit it and only tried because I had nothing to lose. It's better to have some chance, however small, than doing nothing. Yelling at your teammates for trying will only make them afraid to do so, and give you a lesser chance of winning.
Seriously, if there's nothing to lose by throwing out a difficult hook, don't flame your teammates for trying to win the game.

main I agree. Especially if you have the mana for it, hook at every opportunity. Sometimes you'll get lucky and get the enemy team spamming "AIMBOT".
Nami's q. After mastering her q, predicting an opponents move gets much easier in my opinion.
is not when you should throw out a Q but more importantly when you should re-hit the button to zoom to their location. I main support and too many times I have cringed watching a Thresh Q to the enemies location just to feed the enemy team.
and his stupid playful trickster that makes me pull in the tank behind him ;-;