No one understands my humor?

Things that make me laugh can be found at those cheeseburger sites such as theartoftrolling.com, crazythingsparentssay.com, derp.com, there I fixed it.com, go cry emo kid.com etc. But none of my friends or family get the jokes?! I either don't have a sense of humor or they don't, which is it? Its no fun laughing at something if you can't share the laugh with others =/