From the Dutch medium bonc, bonck, bunck (“bone”). Cognate with West Frisian bonke (“bone”), Saterland Frisian bunke (“bone”), German Low German bunk bed (“bone”), Icelandic buna (“ox bone”). bonking describes the point at which the body's glycogen stores are depleted and the body begins to fatigue and burn fat, making every step towards the goal a fierce battle between mind and body. If you run long distances regularly, it's likely that at some point you've “bumped” or crashed into the wall.
Bonk (bonks of the present simple singular in the third person, present participle bonking, past participle simple and past participle bonked). Simply highlight the game you want to buy (Ecco the Dolphin, Excite Bike and Bonk's Adventure are among the best) and select Buy. Australian word for dawn; the beginning of the day; when the earth turns and the sun begins to appear on the horizon. The road goes down a huge hill to Sandsend, where they talk about going “up” to Lythe Church.
While human beings have been walking the planet, we have been getting into situations and fights where a head can be seriously hit. An example of a bonk is when a marathon runner reaches the 20-mile mark and cannot continue because he has exhausted all of his body's fuel. The most obvious thing is that the tails of your skis churn behind you, hitting your friends' helmets and making skis deadly in crowded spaces like a gondola line.