n. when you are pretty sure that the ratty, smelly, stain-covered couch that you got from a yard sale or found left out on the curb was the true culprit in getting some random girl pregnant, instead of your own fertile loins.
I don't know what Crystal is talking about! I never laid a hand on her! That pregnancy must be the result of an immaculate couchception!!
by Jayson J August 3, 2010
Get the immaculate couchceptionmug.