Shaolin Tiger. Your a BJJ blue belt now? I think i will have more trouble pulling guard next time.
White Belt = begginer in BJJ. Skill level can very from no skill at all to fairly good.
Blue belt = about a year or more BJJ training. Blue belts have been known to repeatedly tap judo blacks. Someone with a blue belt skill level has the ablity to defeat any kung fu practioner. This has been proven through hundreds of no rules challenge matches.
Purple Belt = Much more skill than a blue. Most people never reach purple belt. There are people who are stuck at blue for 5 or 6 years and still havn't reached purple belt skill. Many consider the purple belt to be the first "advanced" rank. Purple belts can whip ass and usually have no-rules challenge match experience.
Brown belt = even more skilled.
Black belt = This rank qualifies you among the best fighters in the world (literally). Vitor Beltfort, Minotauro(possibly the worlds best fighter), Sperry, Rickson Gracie, Fabio Gurgel. If your a black belt you can compete and hang with the best fighters in the world. It doens't mean your invincible. But it will take another world class fighter to beat you in a 1 on 1 fight. If your a black then you are the shizkit.