What is a REALLY FUNNY comedy movie?

i mean really HILARIOUS. but doesnt show too much . try not to make it one of those dirty movies where they show the and stuff. just show something really funny that will make me laugh my mouth off or something. i mean something really good. and has a good story to it. i liked i love you man. it was funny and touching ^_^ it had a good story to it. but not something pointless and dirty like harold and kumar. and no blood. no horror. something like a relationship kinda thing. you know what knock off the hilarious part (but if you hav a hilarious one say it.) and give me a really good romance comedy movie. remember no horror or ual stuff plz. dont care if its rated r or pg 13. and definitely not g or pg those are not funny and they are lame.