When Wilson woke up the next morning, his arm did indeed start bruising. It wasn't too bad, but it still hurt a bit so he made sure to be gentle on that arm. Even when a few days had passed since that incident, he was still unsure about it. House had never been confused by a dream before since they started living together, so there had to be some underlying cause of it.

House, meanwhile, had decided to give Wilson a few days before he started phase two of his experiment. He didn't want his temporary roommate to think he was up to something if he started all the phases in one day. He would, however, make the other parts of the experiment a slow escalation of stimulus throughout the day. He had the information he needed, and even did a pupil dilation test, so he was ready.

About three days later, House was once again woken up by Wilson's morning routine. He didn't understand how Wilson could wake up so early, but he figured it was a good time to start with phase two of his experiment: levels of lustful stimulus. After he heard the water shut off, he headed to the bathroom fully aware that Wilson would still be naked. When he opened the door, he sure did get what he hoped he'd see… and maybe a bit of forbidden fruit too.

As soon as the door opened, Wilson panicked. He had literally just gotten out of the shower and was still naked. He rushed to cover his more private area with a towel and blushed like a maniac.

"House!" he exclaimed. "Can't you knock first!?"

So his little Jimmy isn't so little… score for me. Was all House could think. He ogled at Wilson's naked and soaking form for a moment, noting that he wasn't exactly muscular but still fit, sparse hair covered his chest, and he was definitely a bit turned on by this if the bit of bulge was any indication.

"Didn't think it'd take you forever to towel off and get some clothes on. Shouldn't you lock the door?"

"You're never up this early so I wouldn't think I'd need to lock it."

"Fair point. Go ahead and do your thing." House said as he shut the door.

Wilson wasn't exactly proud of the fact that he got a softie over House seeing him naked. But if there was one thing he'd learned over the years, it was how to control an erection, especially around attractive men. Problem was that when he was finally dried enough to put his clothes on, he heard some noises from House's room. It sounded like moaning. Was House… masturbating?

House wasn't actually masturbating. He was playing audio from a previous rubbing session where he had fantasized about Wilson so that it seemed more convincing which had moaning, bed rocking, and even a few whispers of Wilson's first name. Usually he kept the sounds at bay, but for the experiment, he needed to let them out for the recording. Any minute now, Wilson would be wanting to see what was going on out of curiosity, only to find that the ensuite door was locked and unintentionally jiggle the door handle.

As soon as he finished that thought, the door handle moved, so House turned off the recording with a loud 'what!?', quickly ran a hand through his hair to make it look messier, skewed his clothing a bit, and limped over to the door. He unlocked and opened it to see Wilson blushing furiously, pupils dilated, and obviously harboring an erection in his pants.

"Do you mind?" House asked impatiently.

"I, uh, didn't know-."

"The moaning and bedrocking wasn't a large enough indicator that I was having private time?"

"You usually wait until I'm gone! I wasn't sure if it was… that or your leg in more pain than usual."

It was a lame excuse, but it was the best Wilson could come up with under pressure. Now he felt even more guilty for trying to sneak a peek at House. He was also confused because House made sure to only do - that - when the oncologist was out. Why would he have to do it now?

"Why didn't you wait until I was gone to do this?" Wilson inquired. "You could've driven to work on your bike."

"I had a rather naughty dream last night, and needed to let out some steam." Right before House shut the door, he threw in, "And seeing you naked wasn't exactly helping."

Wilson was glad that there was now a door between him and House as he knew it was his turn to 'let out some steam'. The difference this time was he stuffed a washcloth in his mouth to muffle the sounds.

House knew exactly what Wilson was about to do if the scurrying of his feet were any indication. Now that actually started to get him going, and he didn't need to use a recording. The next few minutes were filled with manual stimulation from two friends in two different rooms, each thinking of the other.