An example of a saying is:
"Quick like a butterfly, sting like a bee"
Preferably something involving Deathclaws, Cazadors, Power Armor, The Enclave, NCR, Legion, The King, Mr. House, Yes Man, President Kimball, *GHOULS AND SUPER MUTANTS* etc. any unique weapon (Anabelle, Oh Baby!) or heavy weapon (Fat Man, Missile Launcher, Super Sledge, Rebar Club)
Please help me think of a few, I love this kind of stuff.