paint my fence

An innocuous term with an implied sexual reference. It is specifically used for trolling your friends or older children by invoking phallic imagery.

Texting example:
You: PAINT MY FENCE!
Friend: Huh?
You: Sorry, that was meant for my wife. Do yourself a favor and don't look that up on urban dictionary...

Last night I asked my wife to paint my fence. White, of course.