I wanted to go for a ride, so I borrowed my brother's bike because mine is in repair. I go riding, hum-tee-dum-tee, enjoying the landscape, watch for pretty women, hum-tee-dum-tee-da, bike is doing fine. I take some minor hills, shift a little, the usual etc. Nothing big. No high curbs or potholes or other extraordinary things. So, I'm riding for like 45 minutes, speeding it up on a stretched lane, I see the traffic light ahead of me turn red, I slow down, everything is fine. I wait for the light, it turns green, I step on the pedals and noticed they feel a little strange. I look down, just to discover that the BOTTOM BRACKET IS BEND! And not just a little, but bigtime! So I steer towards the sidewalk and stop, get off the bike and I take a look at it. SEVERE CRACK IN THE FRAME!!! OH NO! Around the bottom bracket area, the frame is bend and has a long, curly crack in it! It looks like it exploded or something! Luckily, home wasn't far so I walked home. Now, the bad part is that it's my brother's bike and he has always been so enthusiastic about it. It's an older rigid MTB with steel frame, Shimano GS 200, etc. Nothing particular but it has sentimental value to him. He always raves about it, saying it's so fast (which it kind off is) and aerodynamic. On one hand, I feel bad that the frame snapped while I was riding it, on the other hand (and this may be a little selfish) I don't think I'm responsible or anything because it was already an old bike with an unknown history (2nd or 3th hand) and the frame may have reach the end of it's lifespan (I really don't see any other explanation for it). I don't really have a clue on why the frame broke (other then what I just mentioned). Anyone? Anyway, we'll probably have to get him a new bike as I don't think it can be repaired...