As athletes, sometimes we joke about low blood sugar. We associate it with being HANGRY (Hungry + Angry) where we get very moody and upset until food gets inside our belly.
I'm sure you (or someone you know) have joked about a bonk that occurred while swimming, biking or running and how horrible it was when it happened but you had a funny story about how it was relieved with a massive amount of sugar/carbohydrates.
Perhaps you have felt this experience before as the symptoms are very uncomfortable (and can be dangerous), while working out or racing.
Low blood sugar is serious and it is not a joking matter if it is occurring regularly. The occasional "bonk" is accepted when you are a high-performing athlete (and then you learn from it so you try to prevent it from happening again in a similar workout) but low blood sugar should not be something that you are trying to get comfortable with while training or racing (or in your every-day life).
You are actually increasing the risk for serious health issues.
Athletes who improperly fuel/hydrate before and during workouts (and races), work out on an empty stomach, workout after going too long without eating or work out too long or intensely without adequate nutrition to support the effort are more likely to experience low blood sugar symptoms.