When I was 15 I thought I was too big for my britches and made a smartass comment to my father, trying to impress my girlfriend and her friends. I should have known better, but I didn't. When I said what I said, my dad got pissed and grabbed me and just put me over his knee. "I'm too old for this" I yelled, but he didn't care. He pulled my pants and underwear down around my ankles, bringing my face to the reddest shade it's ever seen. He started wailing on my ass as my girlfriend and her friends just laughed, thinking that's all they'd see. They quickly became afraid though as my father continued, and I started begging him to stop. I thought that at least they wouldn't see my package as long as I was over his knee, but when he finally stopped, my father shoved me off his lap, rolling me on my back and exposing my package to my girlfriend and her friends. I was so embarrassed and my ass hurt so bad that I actually started to cry. My father just got up and left, saying "let that be a lesson to you." My girlfriend's friends turned and left me alone, as my girlfriend helped me up. I wanted to pull my pants up, but I couldn't because if I did my sore ass would hurt like hell, so I just hobbled up to my bedroom naked from the waist down as my girlfriend helped me up the stairs. She and her friends never breathed a word of it to anyone, for which I'm thankful, but everytime I look at her, I think about how humilated I felt about what she saw that day.