Oh god - I've had too many of these types of embarassing episodes that I can't count.
As for the apple falling close to the tree... well:
When I still lived at home, my bedroom was immediately underneath my mum and step dad's bedroom (it was a two story house). And once or twice a week you'd hear the floorboards above me began to rythmically squeak. A few times I thought I heard spanking but pushed it to one side. After I'd moved out of home my sister took over my old room and verified that she too heard the noises. A few years later my Step Father admitted that mother liked a solid spanking from time to time...
As for embarrasing episodes I can think of two. Some family friends own an eco resort out in the middle of nowhere next to a state forest. The better half and myself went up for a midweek holiday. Anyway, we knew that the owners had to bugger off to the city for a day during our stay so we took our suitcase of "toys". Anyway, amusing times were had and when it came time to leave we checked everywhere to make sure we had picked up all our stuff.
We arrived back in the city and I got a call. "Hi - did you leave a three foot length of dowel in your room. It's got some funny attachments..."
We'd missed the spreader bar OMG - but that wasn't the worst of it - I explained it away somehow and they said they'd return it. what they didn't mention was that they were coming into town the next week... to see my mother...
So I took possession of the bar from a very knowing and amused mother...
The other time would have been when she wanted to borrow my suitcase. I told her to let herself into my house. which she did, I had however forgotten that the better half had left her leather ankle restraints in the suitcase. So imagine my surprise when I come home to find the suitcase missing and the restraints left on the dining room table...