Not quite the same as a one-liner, these are lines that mean something entirely different than what the original writer meant.
I got the first two from a column on business writing where the columnist asked for submissions (Note: apparently the most common misspelling that causes embarassment is dropping the l from public)
Back when showers were not as common, a company made a fixture that would attach to the faucet and become a shower head. The selling point was ease of installation - the ads were going to read “Two screws and you’re ready for a shower”
The next ad was going to be for a large brimmed hat called a “Sailor” It was going to read “Spend the summer under a large round Sailor”
And my last one comes from a freebie candy I got today at a British grocery store I just found. It reads “Look out for Fudge! He’s a bit of a loony, flying round Cadbury Land firing Fudge bars out of his hosepipe.”
Heard any good ones?