Josh learns about Liz's legendary nipples.

Now its important to keep in mind, that even though Josh has been acting much more casual his sister’s body, he also now has the responsible commitment he made to make the right decisions and be the adult when he was with his sister. And the more he spends with her, the more unbearably impossible that becomes. He is juggling the balance of trying to be open and casual about what his sister is going through, and also to be sure the line in the sand isn’t crossed. This is all so Liz doesn’t have to worry about anything, and feel guilty about what she can’t control. However he doesn’t have a system full of hormones as an excuse. And laying down the law isn’t going to get any easier with this increasingly intimidating tower of muscle she’s building. So josh sat watching, and quietly crossed his legs uncomfortably to help him get through this.

As Liz lowered the weights she felt that familiar pleasurable feeling she got the last time she lifted, and she grunted from the warm feeling in her arms as the bar rested on her firm breasts for a moment, before groaning as she lifted them again. Perspiration was already forming on her, and Josh mostly noticed how much was forming on her big naked breasts, but after Liz had lifted the weight,Josh noticed something odd about her nipples as they slowly extended to her workout… “were those my condoms being filled by her nipples?” He shuddered and gave a little squirt of pre cum in his pants. “Jesus, she would really be diminishing my pride if I didn’t enjoy this so much.” A thought that also applied to the fairly impressive amount of weight she was now on her third rep of, and was now moaning. “Wow, she really enjoys lifting” he thought just before he did a double take on the real culprit of her moans. Liz apparently couldn’t help herself and was sliding the weight bar along her nipple for every rep, which was causing her nipples to extend to ungodly lengths against the cold metal. As Josh sat captivated by his sister’s bare breast workout, he started to hear an odd gurgling, and then the sound of stretching rubber. He realized stunned that her nipples were actually outgrowing a magnum condom, and after he got up he approached with tented boxers, in order to get a better look that both her breasts and her nipples, he noticed that they were much rounder and incredibly taut. The mysterious gurgling continued occasionally between moans from Liz with every rep, which he just realized had exceeded 10, while she was lost in the rapture, when suddenly- *SNAP* *SNAP* the two condoms burst open at the ends and retracted to the base of her nipples. Liz’s eyes suddenly opened and after wandering for a second her eyes settled on her chest as she stared at her enormous nips.

“Whoa” she moaned. She quickly racked the weight then sat up to see a very interested brother looking over her. “Oh sorry, I totally spaced out there. I have no idea how I’m going to deal with these things” she gestures to her nipples, “they are so sensitive I might have to give up shirts!” She removed the effectively useless wifebeater as she says this, “which you may not mind, but it isn’t approved of by most people.” She said with a wink. Josh gave an exasperated laugh, still amazed by her nipples breakout acts. “ But if I don’t figure out something I think I’m going to have more close calls like what you just saw.”

“Close call?” Josh was confused

“Yeah, didn’t you hear that gurgling? When I rub my nipples too much I get a bit of a mess on my hands.”