The Elves take the signed helmets as evidence that the Dwarves are admitting themselves to be sissies (at last).
The Dwarves should have written "Elves are sissies," not "I am a sissy," which implies that the writer is speaking of himself.
The Dwarves should have written "Elves are sissies," not "I am a sissy," which implies that the writer is speaking of himself.