I've had enough of it, but I get it all the time. =/ I know that I'm more mature, and smarter than the people saying it, but it just happens so often, and it's usually of bizarre hypocrisy. For instance, some as*hole insulted my family members, and said that all poor people are lazy ret*ds -- including them, but then he said that I'm childish, not, of course, before insulting my parents.
Another time, I was having a debate with somebody, and I kept bringing him legit information over and over, but when I told him that he can't admit when he's wrong, he said "Grow the hell up Ryan."
There are more examples I can give you, but I feel it would be redundant. Do I make people feel insecure..? Maybe that's it. =P
_________________
sigh