Ok, this is really a three-way crossover, but it won't let me choose 3. Oh well.
I own nothing, sadly.
The Doctor ran around the console, inputting coordinates and pulling levers. "Ponds! Open all the doors leading from the door to the swimming pool! Then hold onto something, and don't let go till I tell you!" He heard 2 muffled "Alright!"s a few minutes later. He then pressed a button, ran to the doors and flung them open. The TARDIS tilted sideways, and he managed to fall against the central console. He watched as River Song fell into the TARDIS, winking at The Doctor, and he heard a gigantic SPLASH as she landed in the pool. "Move over, we're going to the next stop!" He called to the passengers. "Wait, what?" Rory and Amy yelped. The TARDIS, still sideways, was now going to a different place.
"Keep holding on!" yelled The Doctor. Just then, Loki fell into the TARDIS. "Don't freeze the swimming pool!" The Doctor called after him. "Alri-"SPLASH-"IT'S WET!" "Pools are wet, sweetie!" "Move over, there's one more coming!" yelled The Doctor. Meanwhile, Rory was desperately trying to understand what was happening. "I thought we were only picking up River!" he cried. "We were, then I realized I might as well kill two… no, three birds with one stone!" The Doctor shouted back. The TARDIS was once again in transit.
Sherlock fell into the TARDIS. The Doctor heard a SPLASH as he fell into the pool. "Doctor, why are there other people in the pool?" he called. "Made all my pick-ups at once! Oh, Ponds, you can let go now." He shouted back.
Slowly, the TARDIS righted itself again. The Doctor walked over to the library/pool, a queasy-looking Amy and a baffled Rory following. As he walked into the library, he could hear Loki and Sherlock arguing over what was the best way to kill a person with kitchen utensils-wait, what?-and River was (unsuccessfully) flirting with Sherlock. "I'm married to my work, and I'm not going to be cheating on it anytime soon." The whole spectacle was rather silly, especially as they were all treading water in a swimming pool. Sherlock looked up. "Ah, Doctor! You didn't say you'd be picking up everyone at once." "Yes," Loki agreed, "And why have you these foolish mortals on board?" River just rolled her eyes. "Boys!" she mouthed to Amy, who snickered. Sherlock had turned to Loki when he said that, and was now deducing him. Loki, angered at being told all his secrets by a stranger, blasted his frost magic at Sherlock.
After Sherlock and Loki agreed a spatula was the best way to kill someone (having tested their theories on Captain Jack Harkness), The Doctor had dropped them both off in Germany to take down Moriarty's web (Loki wasn't going back to Asgard anytime soon, and found Sherlock bearable). The Doctor, Amy, Rory, and River stood in the control room. "Well now! Off to fight the Silence, eh?"
This was 'normal' life for those who had been in the TARDIS.
And… yeah. Please review!