(noun) A cute way of expressing semen!
"Deck the halls with creamy seamen,
falalalah, lala lalah!"
1) Enlisted Navy servicemen.
2) Whom am I trying to fool? It's actually a clever way of saying semen, cum, jizz, jism, man milk, spunk, cream.
What is big and black and is full of seamen?... A submarine!
Donna enlisted in the Navy and now she likes seamen even more!