In the 1992 PC game, Spellcasting 301 (
http://en.wikipedia.org/wiki/Spellcasting_301), you play a student sorcerer who must use magic to ensure his college beats a rival college in a series of competitions during spring break.
One such competition is a wet t-shirt contest which requires you to find a women to represent your team and the only person that will agree is the completely flatchested Roxanne. Your character has access to the UPPSSY spell, the spell of opposites. You initially use it to make a crooked casino straight so you can win money enough to get through the game and in the wet t-shirt contest you use it to make Roxanne the opposite of flatchested.
No animation or voices so attached is every pic of Roxanne before and after, as well as the full text describing the UPPSSY spells effect.