Mungo

Mungo is the term the children in Little Lamplight use for adults since the time they were rejected entry by the inhabitants of Vault 87. If you talk to some residents of Little Lamplight, they will sing the chant: 'Mungo, Mungo, smells like dung-o!'.

"Mungo" is likely slang for "Humongous," as grown-ups can often look quite large to children.

Mungo