"You give me a 221boner."
"You let my flatmate into your crime scenes… How about letting me into something else of yours?"
"You steeple your fingers a lot. I could give you something better to do with them."
"I’d let you investigate more than just my crime scenes, if you deduce my meaning."
"Mycroft? I’d rather be your croft."
"Science of Deduction? Wouldn’t you rather hear about the Science of Seduction?"
Submitted by thesaphiragirl.
"When I tried to deduce you, the floating text turned into erotica."
"You make me so happy, I spray painted a smiley face on our wall."
"Will you be the Sher-key to my Sher-lock?"
"So, you like letting freaks into your crime scenes… How about letting a freak into your bed?"
"I noticed you’re wearing a deerstalker. May I be your dear?"
"I enjoy my jumper collection, but I’d much rather have you on my body instead."
"My umbrella will keep you dry, but I’ll keep you wet."
"I was Wats-off, but then you turned me Wats-on."
"If you give me your heart, I promise I won’t put it in the fridge."