The term "wrong idea" is usually said by someone when they don't want you to contradict something they said. Two things are usually at the center of a wrong idea. If a girl liked someone as a friend but not as anything more then she doesn't want that someone to believe that she likes them more than a friend. The term is usually said by someone before they reject your thoughts or ideas. The kind of people who say this are more assertive and dominating. They might try to force you into unnecessary submission.
"I like you, but don't go around getting the wrong idea."
" I think you're getting the wrong idea..."
"Don't get the wrong idea but I don't think there is a right idea." - Contradicting Statement
there is no wrong use for this. it is what it is. get over it if you cant take a joke, and if someone says something that bothers you, go somewhere else.
if you get upset because someone is 'using this site wrong' you are a herb, a total timmy, and a major tron.
when someone says something that is just mean, rude, or nasty. it's usually kind of funny, though.
ebony: let's go in johns office and pretend to break his legos.
yonas: pretend? let's really bust that shit up.
ebony: alright, but that's just wrong dong silvers.