The act of using a section of tubing to defecate into someone elses (usually that of a sexual partner) rectum.

When a man shits into a womans vagina.

The act of defecating directly into one's vagina. Like a space ship attempting to dock to a space station, "space docking" involves very accurate control and near-perfect alignment of the two orifices.

the once common, now lost art of pooping into a girl's vagina, space docking is enjoying a resurgence of popularity, particularly in the midwestern and northeastern United States (most notably Chicago and New York City) that reminds many art historians/scatologists of the beginning of the renaissance that began in Italy in the 15th Century.

Two objects namely one uncircumcised penis, and one other penis gently come together into a tip to tip union. once touching, the uncircumcised male then proceeds to encapsulate the other mans shaft creating a perfect vacuum seal.

When a man inserts his "junk" into a woman's ass (junk), then exits and starts having missionary sex after the residue from inside the woman's butt (poop) is left on the man's penis.

"When a space ship enters a dock, or dock "2" (The Butt (Taking a #2 refers to taking a dump; hence "dock 2")), but then re-docks into sector 1 (The Vagina), in result, leaving her with a high risk of getting a kidney infection or any other related venereal disease."

The act of buggering somone else, often of the same sex with a frozen turd.

latin: incursio astrum
Mid-missionary position the man pulls out, turns his back to the woman and defecates into her vagina. This maneuver is remarkably difficult, hence the likeness to docking a shuttle into a space station at 17,000 mph.

from the book: Dirty Sanchez's Guide to Buck Nasty Sex