Sister fucks Cross-dresser brother

"Yeah," James said.

"We're gonna play Pimp My Brother," I said.

"Ha!" James said, while flopping back on my desk chair. "That's a new one, but it sure does sound kinky!"

"Oh, it will be," I said.

I pulled on a thong just as Sam pushed open the door to my room. The pathetic weirdo already had a boner, no doubt from the cum-shot videos he couldn't seem to stop downloading. He looked like a real piece of work. Sweat pants. Little man boobs under a gray T-shirt.

"Whaddaya want?" he asked.

I picked up the cum-stained bra from the bed and threw it at him as hard as I could. He caught it by trapping it against his chest.

"You can start by explaining that," I said.

Sam turned over the bra in his hands. His fingers ran over the frayed elastic. His eyes paused on the cum stain.

"I don't know what you're talking about," he said.

Either Sam was telling the truth or he was a good actor.

"Are you saying that you don't try on my lingerie when I'm away at school?" I asked.

Sam glanced at James, who shrugged, and then looked back at me.

"You're fucked in the head," Sam said.

"Maybe," I said. "Maybe not."

I did my best to flash a sexy smile that communicated a simple message: I know you're lying, but play along with me anyway. It was the kind of subtle gesture that can pass between two people only after they've lived together a long time.

"I think you should try it on," I said.

Sam looked at the bra, then back up at me. He cracked a smile. I could tell he got my message. He was starting to play along.

"You want me to try on this bra?" he asked.

"Yeah," I said. "If the bra doesn't fit, then I'll acquit."

We all laughed.

"OK," Sam said. "But what if mom and dad walk in. Wouldn't that look kind of funny?"

"They're at Aunt Martha's house," I said. "They won't be home for hours."

"OK," Sam said.

His man boobs giggled as he pulled off his shirt and dropped it on the floor. He pulled the bra across his chest and quickly hooked the clasps in the back. Sam didn't show any clumsiness. It was as if he'd had some practice putting on women's undergarments. Sam's cock flinched several times as he pulled the straps up his arms. I had no doubt he was turned on. He made no effort to hide his boner.