CONFIRMED....Girl inches are real, y'all. It started out with a joke about me jumping out our living room window because I gave her my cold. She said "Go ahead,  it's only about 3 inches to the porch"... it's about 6 inches. I laughed and said "that's in girl inches". She asked what that meant,  and I told her girls overestimate length. When she asked what I meant I asked her how long she thought my dick was. She guesstimated 8-9 inches. She was surprised when I told her it was 7.5.