Scribbles is the title of a paper note found in Vault 106 in Fallout 3. It seems to have been written by one of the insane people inhabiting the vault.
Location
This note can be found on a table in the living quarters near the overseer's office.
Transcript
Scribbledy bibbledy hoodelly hoo.
Wing wang bricka bang choo choo choo.
Upsideup popsicle tastes like blue
Ghosts in the hall go boo boo boo!
Gallery
Location in Vault 106's living quarters