ExH is a mechanic, and he tends to talk like a mechanic (using colorful language) when he's working. One day, back when we were still married and DS was about 3 years old, he was helping exH put new brakes on my Dodge. I was in the house with DD, who was still a baby. DS comes in the house a little while later saying, "Dad says I need to take a break."
The next day, I take the kids to the babysitter (who is like 2nd family to me--my kids call her Grama and her son Uncle Bob). When I go pick the kids up, Uncle Bob and one of his friends immediately say "It wasn't us. We didn't say anything like that around DS ever!!!"
They explained that they were out working on Uncle Bob's pickup. DS was helping. He crawled up under the pickup with a tool, then started exclaiming, "What a piece of sh--! Oh sh--, that's not gonna work. G-- D--- it. Hey, you guys go take a break, I'll finish this!"
As soon as they said "you guys go take a break" I just KNEW DS picked all that up from helping exH the day before!