Figured out where ballFullness = NaN was coming from.
maxCum() returns 0 if the player doesn't have a wang. Anything / 0 = NaN.
Fixed some Venus Pitcher pregnancy issues.

There's also a report along the lines of these scenes increasing butt looseness, but I can't see anything that would be causing it. Trying to get my hands on a save to see for myself.
Fixed a method used to retrieve stats from the StatTrack class that was causing one of the Venus Pitcher birth scenes to crash.