birthing a sailor
The act of a U.S. Marine sitting on the toilet and delivering a large 'deuece' aka BM. While the term has never been fully embraced by the Navy, it persist nonetheless.
George to John, "where the fuck have you been" ? John replies, "Oh man, I was 'giving birthing a sailor," George sardonically replies, "I hope the little fella did not require an episiotomy."
give birth to a sailor
When a U.S. Marine takes a shit. A term not enjoyed by the U.S. Navy.
Excuse me, I need to to the shitter and 'give birth to a sailor.'