To impregnate, usually in a vigorous manner.
Don't Preggo My Eggo douchebag, I don't want to be throwin' up for the next 9 months.
by Future Kids of Greater Jlem October 23, 2008
Having sex with a pregnant chick in an attempt to impregnate an already fertilized egg. This act requires a long penis to reach the egg and massive amounts of healthy semen to give the egg no choice but to be fertilized twice.
Ashley really wants triplets so she told Brad to Preggo My Eggo.
by BeeToTheRyan June 17, 2016