When you just know something is wrong the moment you click on the send button

Was talking to my other half when I recalled this incident when I was typing an e-mail to a friend. We were on the topic of business opportunities.. and half way through the e-mail exchange, we were discussing about pumping in capital to start a business... just then, my friend exclaimed that she had no capital to start anything.. trying to be supportive, I replied by e-mail telling her, "If you can run the place, we can pool some capital and start something. I can be your sleeping partner", and clicked on the send button. Just then, it dawned on me that something was wrong.... I leave the interpretation to you..... Lucky thing, that friend didn't realise the pun and replied in a normal way that the biz was too difficult to begin with....phew!