"Hold still, Watson."
"Well, if you would just hold still!"
"You try it sometime, Holmes. Ah!"
"That one had gone rather deep, I'm afraid."
"How many more?"
"Dozens. Are you sure you don't want something for the pain?"
"They're just... ouch... thorns. I'll live."
"Technically, I believe, they're referred to as needles. Which come to think of it may be why the thought of another needle has no attractions for you."
"Holmes, if you don't stop laughing, so help me, I'll drag you back to that greenhouse and drop you on your backside among the Colonel's prized cactus plants!"