DnD Head Canons

[noob]

Truespeaking warps things through warping their names in such a way creatures from the far realms are terrified of those who use truespeak for the fear they might actually understand their names and pronounce those so bad they would become three dimensional creatures.
Because seriously true-speak checks reach the realms of nonsense like 180 at which point basically anything could be possible.
When you think about how reality is bent by a high skill check in a mundane skill a high truespeak check would bend reality supremely.