courtesy

honestly so many people that's playing don't have courtesy . if you're trading with someone DONT afk. People always say things like whatever it's only champion select. Champion select determines what you're doing for the next 30-40 minutes. DONT SCREW IT UP. How many people have i seen say they're trading with someone and then afk. You're then forcing someone to dodge because he DOESNT KNOW WHO TO PLAY

if you're asking for blue DONT say things like "give me blue or i'll start feeding" or "i need blue". You need to be polite to the one serving you.

If theres a big minion wave and your jungle is coming to gank, telling him not to is ok. What's not ok is NOT telling him and then watch him gank while you dont respond at all, die, and then flame. It's not his fault, it's yours.

DON't tell your support what to play, it's not your decision. Unless it's a coordinated team ranked, your support can play whoever the hell he wants

and ultimately, the thing that buggs me the MOST is DONT DONT DONT

SPEAKING IN HINDSIGHT. what this means: tell someone to do something after the problem occurs in a scenario where the outcome is completely impossible to tell the outcome ex: telling your adc that they shouldn't fight the enemy when both are 0/0 "next time" ex: telling your support to not hook the enemy adc when the enemy team is nowhere to be seen "next time" ex: telling the ahri to save her charm for the enemy adc instead of their top when the adc is the only one in vision "next time"