Oh, that feeling. I have not had it in a long time but I bit off more than I could chew this morning and paid the price. I received a huge bonk about 7 miles from home. We are talking about the 1,000 yard stare, mouth open, going 14mph on the flats kind of crushing bonk. All of the lights went out. It was the kind of bonk where you have to sit down in the garage before going inside because you don't want your wife and kids to see that look on your face. As soon as I walked in the door I said hello, got out a big pan and the pancake mix and proceeded to make a mountain of delicious flapjacks before I even emptied out my jersey pockets.