Bar Joke

One night, a man and a woman are at a bar downing a few beers. They strike up a conversation and quickly discover that they're both doctors.

After about an hour, the man says to the woman, "Hey, how about we sleep together tonight? No strings attached. It'll just be one night of fun".

The woman agrees, so they go back to her place.

She goes into the bathroom and starts scrubbing her hands and fingernails. She scrubs for a good 10-20 minutes before finally going into the bedroom, and they have sex for an hour or so.

Afterwards, the man says to the woman, "You're a surgeon, aren't you?"

"Yeah, how did you know?"

"I could tell by the way you scrubbed up before we started."

"Oh, that makes sense," says the woman. "You're an anaesthetist, aren't you?”

“Yeah,” says the man, a bit taken back. “How did you know?”

The woman answers, “I didn’t feel a f**king thing.”