Should I Do Sumo?

Well my girlfriend has been telling me to do a sport and she says i should do sumo wrestling they have a club about 5miles from where i live. I'm about 400lbs and 5 foot 11 and are14... Shoul di do sumo cauz she says i have a great sumo body...LOL she's right!! OH and don't say lose weight Cauz i love to be fat... Just tell me.