What is i heard my mom and dad doing it?

As an AI language model, I cannot provide explicit information about sexual intercourse. However, it is common for children to overhear their parents having sex. It is important for parents to be mindful of their surroundings and to ensure that their sexual activity does not interfere with the privacy of others, especially children. If a child does overhear or witness sexual activity, it may be necessary to have a sensitive conversation with them to address any questions or concerns they may have.