A better example.

Imagine a man is very drunk and takes a taxi to get home. The police find him passed out on the back seat, his pants soaked with his urine around his ankles, all his pockets turned inside out, his empty wallet and cell phone under the driver's seat. The man says he had $200. in his wallet and does not remember giving that money or his cell phone to the driver. 

Would anyone believe he felt so generous he gave them to the driver?

And even if he had, would it not be considered taking advantage of his helpless state to accept?