When I had my son he was great - When he started to walk was the problem!
One night my husband and I were celebrating our 4yr anniversary and our son had come in our bedroom and we put him back to sleep. We had waited about 30mins. and thought it would be safe to make love at that time. We started, and were into it for about 20mins when i happened to feel a tug at my foot and here it was our son of 2yrs watching and wanted to know what we were doing.
Daddy told him he was hugging mommy, and our son wanted to know why he was on top and daddy told him he was hugging mommy. Then he asked why is that pee-pee like that...Well we had no words except lets go back to bed sweetie. Daddy got up and proceeded to take him back to bed and our son said so sweetly come here daddy, daddy bent over and our son punch him in the nose and said "if you're that tired don't sleep on top of mommy!"
Im glad he doesn't remember that now, he's 14 today. I was so embarrassed for months since that. Our son then didn't talk to his daddy for a few weeks cause he was mad at him - How embarrassing!!