The great thing about a Blog is that the writing doesn't have to be proper English. It is OK to use slang. Although i do think that its a little strong of a paragraph, meaning that if someone finds it offensive in nature then your creditability will go down and your loose the interest of your reader. I may also mention if you plan on using Adsense or some other means of making the site profitable then you might want to tone it down a bit. Most advertisement have strict guidelines as to the content of you site.