Here’s one which only works if you know BOTH Portuguese and English:
“In Portugal it’s very common for old ladies to go to a coffee place and ask for a big cock”
(Explanation: the Portuguese word for milk with coffee - “galão” - also means “big rooster”. Those are the only two meanings it has in that language. However when you translate it to English you can use a certain synonym for “rooster” which can be read as having another, very different, meaning)
Here’s one which only works if you know BOTH Portuguese and English:
“In Portugal it’s very common for old ladies to go to a coffee place and ask for a big cock”
(Explanation: the Portuguese word for milk with coffee - “galão” - also means “big rooster”. Those are the only two meanings it has in that language. However when you translate it to English you can use a certain synonym for “rooster” which can be read as having another, very different, meaning)