Personally I think your page is possibly one of the LAD ones (Brit's will understand this) or a similar meme. Though the alexa rankings (36k/World 6k/US) you gave for your website suggest something like AwkwardFamilyPhotos. Which is exactly that actually, but it's been around a while.
Finally there's nothing to suggest the stat's you've given us are true (and why would you, most people on here will dick on you in a second). I certainly don't think you're the noob you're trying to convey. Irregardless you should be congratulated on your success. SEO won't help you. YouTube will! May your site keep rising! Good luck.
P.S Ignore anyone who says Pinterest. This dude's niche is funny pictures, guys, not fucking babies, shoes and pretty flowers!