You're 11 years old!...
Sorry, but children of that age are not old enough to be on Imgflip, not because they can't but because of how misleading and inappropriate it could be for them. If it were a few years back -however- when MSMG was a classic sh8tposting stream and not a friggin' socialists empire or some crap and when pørn/NSFW images were less common and when Imgflip was overall more popular than it is now, sure you may be able to get away with being under-aged if you didn't explicitly state your age and stuff, but now that's a bit of a different scenario...