as long as one's (or someone's) arm
informal Very long: I have a list of vices as long as your arm...- The business employs some 20 full and part-time people and there's a waiting list as long as your arm of young girls wanting to don the mob-cap on Saturdays and in school holidays.
- There were many times that the police were forced to drag us away from our protests, and I probably would have had a criminal record as long as your arm if the magistrate hadn't been Cecil's brother.
- The man elected chairman that opening night was a retired Brigadier with a pedigree as long as your arm, and a penchant for shouting orders at subordinates.
See parent entry: arm