The only thing I see when I open your site is a page filled with adsense. That does not tell me it is about funny videos, it just tells me it is just another mfa site. If your going to have adsense don't make it the centerpiece of the site and the only thing noticable when a visitor arrives there. I stopped looking when I saw the ads.
I like the site but agree with the above post. Google on top is using up space. If it were me (my opinion) I would break your google ads to 2 banners 1 top and one scraper.
Yes the Google ads are killing your site. When I end up on a website like this I click the back button as soon as possible. By flooding your website with ads, you are losing a lot of potential to make a quick buck. If you insist on using so many ads, at least hold off until you do some marketing first. Most web directories won't accept a website so full of ads. Also many websites wouldn't exchange links with such a website either. The thing I like the least is if you go to watch one of your video clips, you actually have to scroll past the ads to see the video. That's a big thumbs down and would make me leave the site.