Someone who you choose to look out for and consider to figuratively be "your child" even though they have no blood relation. Often when using this term, people mean it in the same way as saying "My sperm."
what you say to a female after you go up to her and rub her belly gently. This is a term in which you're telling her that you are going to fuck her and then cum inside her pussy. Often the female will freak out and scream like a bitch like when my dad saw my grades the other day.
Boy: Hey!
Girl: Sup...?
Boy: Soon you will contain my seed.
Girl: a.WHAT THE FUCK!!!