(as) easy as A, B, C

See: as easy as pie

• a hell of a lot of something
• a hell of a someone
• a hell of a something
• a hell on earth
• a hell-raiser
• a hen night
• a hen party
• a hidden agenda
• a high-flier
• a high roller
• a hit list
• a hit man
• a hole card
• a hole in the wall
• a home away from home
• a home from home
• a home truth
• a honeymoon period
• a hope chest
• a hornet's nest
• a horse of a different color
• a horse of another color
• a hostage to fortune
• a hot button
• a hot dog