Pettifog is to argue over unimportant things.
(verb)An example of pettifog is to fight over who is going to be the first person to read the newspaper on a certain morning.
See pettifog in American Heritage Dictionary 4
intransitive verb pet·ti·fogged, pet·ti·fog·ging, pet·ti·fogs
Origin:
Origin: Back-formation from pettifogger
.Learn more about pettifog