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."
Taking a huge dump/shit, after a huge meal. Usually happens after eating mexican food, or ridiculously large burgers. Causes environmental hazard by spread of stink fumes, that travel at fast speeds within a house. Effect can be reduced with the use of air fresheners.
Frank: Dude, the whole house stinks, and the toilet is clogged.
Guy: Yeah man! I ate too much last night, and so I was birthing Madonna's children all morning.
To have an experience so fantastical that the world seems an utterly cold and charmless place in comparison. As it would after waking from a dream where you witness the live birth of a unicorn.
Barnabus fell into a state of catatonic depression after Birthing the Unicorn at the Taylor Swift concert.