I would say not. You definitely know a bonk when you feel it. When I have bonked, I get a cold or hot sweat, the shakes, extreme fatigue, and kind of an...empty feeling. You have to really focus to get to some relief (like a cookie! and a lemonade!) and that relief is all you are thinking about. Bonking is worse when running or walking, for me, but a bike bonk blows too (alliteration!).