new headcanon 

mail trolls teeth are easily knocked out while females are naturally more resilient 

External image

both gamzee and sollux had there teeth knocked out and yet when the metal robot repeatedly punches vriska in the face multiple times her teeth say perfect gamzee and sollux  are from opposite sides of the hemospectrum so that is not the reason there for girls are stronger 

External image

(( this also supports the troll boobs are a layer of fat to protect organs because of females more aggressive nature ))