To say nothing of the hour and a half (at most) that it would take to move this hypothetical quantity of "baby batter" through such a small orifice into such a confined space, the alternative would be worse. If such a thing were to take place in the average time needed for such an act, there would likely be no survivors on either end. The cannon-like blast on his end and the sudden immense pressure on hers would tear them both to bits.(at least... the parts they care about there and then)
Seeing someone act it out with an inflatable rig and make it believable... I'd pay money to see that.