I heard a story once about a guy who was doing those activities with a lady friend in his bedroom. He lived with his parents. They made a bit of a mess on the bedsheets. He was loading the sheets into the washing machine when his mum asked why he was washing them in the middle of the day. His response, “I spilled my Chinese”

Your spilled spaghetti story reminded me of it, so now you get to enjoy the phrase too!