If you're under ten years old here's an uproarious example of lefty humor for you. It'll have you rolling on the floor trembling in fits of laughter. How could one man be so funny, you'll want to know.
Go to the Drudge Report and click on the Al Franken video skit.
This is an ideological as well as an emotional maturity litmus test. If you're over ten and you laugh then you've self-identified as a leftist who has a long way to go before you're grown up.