Absent-minded Professor: Heavens! Someone stole my wallet!
Wife: Didn't you feel a hand in your pocket?
Absent-minded Professor: Yes, but I thought it was mine.

心不在焉的教授

心不在焉的教授：天哪！有人偷了我的钱包！
妻子：你难道没感觉到一只手伸进你的口袋？
心不在焉的教授：感觉到了，可我还以为那是我的手呢。