She said out of pity for him, "I shall give you a kiss if you like," but though he once knew, he had long forgotten what kisses are, and he replied, "Thank you," and held out his hand, thinking she had offered to put something into it. This was a great shock to her, but she felt she could not explain without shaming him, so with charming delicacy she gave Peter a thimble which happened to be in her pocket, and pretended that it was a kiss.

Ch. 6 - Peter & Wendy (1911)