Kroger, not Kroger's.
HIPAA, not HIPPA.
Couldn't care less, not I could care less.
An, not a. (When my bride was driving her then-92-year-old father back to his assisted living facility after dinner at our house, she was hit while waiting to make a left turn by the local police station. The drunk women who hit her was trying to make a right turn onto the road my wife was on, waiting for the light to turn. My bride, while jumping out of her car and hurling profanity at warp speed, asked the women, "what the fvck is wrong with you?!" The women replied/slurred, "uh, I had a accident." My bride replied/screamed, "Bitch, you didn't have a accident; you had AN accident!" It is now family lore that you don't use "a" and "an" inappropriately unless you want someone you know to go medieval on your ass.)