Dick Size related trivia got me humiliated in front of girlfriend, her sister and her hot best friend.
So once when I was dating this girl in early 20s, we all were hanging out. When her hot best friend who I totally had hots for, shared a fact.
She said the length from the tip of a man's index finger to the root of the thumb is the size of the dick of that man.
Now I held my palm out and measured and said that my dick is a couple of inches longer than this. So my girlfriend corrected me that it is exactly that much and don't try to increase the size. So I am on a shorter side with 4inches when erect. So her friend and sister started laughing. She showed on her hand how long she expected her boyfriend to be and it was thrice my size. She reduced down to twice and said this is the least that would satisfy her. I started arguing that it's not size that matters and how we use it that matters. She kept saying No it's the size that matters for her.
I felt so humiliated and everyone was giggling constantly knowing they have figured out that I don't measure up that much. I still jerk off to it reimagining the whole conversation.