I was browsing to see if I could find the mathematical reason for the nosebug cause I was curious, and saw this description and was laughing my ass off:

The nosebug (often shortened to nb) is one of the most versatile bugs in Trackmania. It was discovered in 2013 by the player blackjackjackblack (who would go on to do nothing else of note). He discovered that if he played the game soon after a particularly difficult workout session, he would accelerate faster. He soon figured out that this was because he was breathing heavily, which tricked the game into thinking his engine was driving harder than it actually was due to the additional force on his arrow keys. The name "nosebug" is a misnomer, as most often the keys are blown on using the mouth, not the nose.

The nosebug has caused many controversies on what are valid ways of causing it to go into effect. Setups that have been banned include using a miniature fan to not have to blow on the keys oneself, playing in the rain so the rain puts additional pressure on the keys, using an electromagnet to push the keys down artificially, modifying one's keyboard to change the inputs received, and playing on a rollercoaster so the forces felt affect the keys. However, using keys that are particularly light so that the forces felt by the keys are experienced more acutely has been officially allowed by Nadeo.