Dan Jones didn't approve of how strict his daughter and son-in-law were on their daughter Lucy. She had just turned eighteen, but she wasn't allowed to date, or stay out with her friends past nine o'clock, and they made her go to a Catholic private school to keep her out of trouble, not that she ever had the chance to get into any. He was never that strict on his daughter growing up, so it must have all come from her controlling, know-it-all husband.
So whenever Lucy visited him, he always gave her whatever she wanted, as long as she promised not to tell her parents. He didn't appreciate being yelled at by his son-in-law. But Lucy never told her parents about the candy he gave her, or later the more revealing clothing he bought her that she hid for her parents. He liked to spoil Lucy, and since his wife died five years earlier, he did it much more than he had before.
That weekend Lucy was staying with Dan, and he bought her all the junk food she always asked for. When her parents dropped her off, she was still wearing her Catholic school uniform. There was something about her white shirt, plaid skirt, and knee high socks that Dan always got hard over. He had even jerked off looking at slutty school girls on the internet.
"Hi, Grandpa!" Lucy said, kissing Dan on the cheek. As soon as her parents weer gone, she said, "do you mind if I change my outfit?"
"But you look so cute in that," Dan said.
Lucy rolled her eyes. "I hate this dumb uniform. I promise I'll put on something you bought me."
"Go ahead then."
Lucy took her suitcase into the bathroom, and when she came out, she was wearing a bikini top and a short skirt.
"That's awful revealing," Dan said with a straight face. He was sitting on the sofa and crossed his legs to hide his erection. He stared at her nipples poking through her shirt.
"You're the one who bought it for me." She sat on the couch. "I thought you liked it."
"Well it makes you look sexy, but grandpas shouldn't think of their granddaughters as sexy," Dan explained.
Lucy grinned wickedly. "But I like looking sexy. Mom and Dad freak out if I look a little nice for boys. I mean, I've never had a boyfriend. I've never even seen a boy's dick." Lucy looked up at him and Dan's face reddened but he didn't say anything. "Hey, Gramps, could I see your dick?"
"Lucy! That's so inappropriate!"
"No, I just wanna see what one looks like in real life. Come on, it's just you teaching me something. Please? I won't tell my parents."
Dan couldn't say no to Lucy, nor did he want to. He slowly unzipped his pants, and his hard penis slipped out. He couldn't believe what he was doing, but his penis was throbbing in his hands and sticking straight up, and it was all he could think about.