Birthday plans

I'm not sure what to do about my birthday (celebrating Friday June 10th). Trapeze school is the best idea out there, but it's been done this year; Six Flags has some new roller coasters, but it's a long drive away, and I wouldn't be giving my friends much advance notice about taking the day off. What do you think, IRL friends? Am I missing something neat that we could do in the city, or would people rather just get together for dinner? Ideas are welcome.