If Someone Suggests For You To Get An Item

You know, like a Sweeper, Sight Stone, Mortal Reminder, or Black Cleaver, for the love of League of Legends... JUST DO IT.

More than one person can carry a game, just because it's not YOUR optimal item (or you just happen to think it isn't cough AP supports cough) doesn't mean it's not benefiting your team. No one suggests something like that because they want to lose a game, so stop giving an asshole reply about how you know what you are doing. They aren't questioning if you know what you are doing or not, they're trying to recommend something that can help YOUR TEAM win the game. DO YOU WANT TO WIN THE GAME?

Even if you think the way they said it was rude, they probably are just having a hard time, that doesn't mean what they are saying holds any less validity. When enemy Swain is destroying your Top laner, and he suggests a Morello's to your Mid HELP HIM OUT DUDE. Don't sit there and ignore him, /mute him, or blatantly tell him he's a feeding noob who doesn't know what he's doing, RESPECT YOUR TEAMMATE. If he's losing, the odds are he can't afford to dump gold into something to help him.

When you're Bot getting stomped by that enemy Soraka's healing and your Support suggests for you to grab an executioners , BUY THAT SHIT MAN. They're suggesting it because it's a problem. Don't be disillusion, don't tell your support to STFU, they want to win the game just as much as you do.

Stop thinking everyone is shit and that you have all the answers. Unless you are Challenger and in the Top 50 players, there's a 100% chance that you definitely fucking don't have all the answers. You don't need to to trust your teammates, but show some respect and understand that sometimes your team is seeing things that you aren't. You aren't playing every lane on the map, and sometimes problems branch out farther than your lane on the map. Your teammate is taking the time to communicate with you about their concerns, they're actively trying to work as a team by suggesting something, so next time take the initiative and respect your teammates request or explain to them why you can't do it (without telling them that they're fucking stupid and don't know how to play your champion).