1) Right click Summer Fling ---> Properties ---> Local Files ---> Browse Local Files...
2) Double click the "Game" folder ---> open "patch.rpy" ---> it contains the following line -
label patchcheck:
$ persistent.uncensored = False
return
3) The only thing you need to change is False to True, it should read as follows -
label patchcheck:
$ persistent.uncensored = True
return
4) Save the changes you made
5) Now launch you game and enjoy it the way it was intended to be played, on the bottom left of your game screen it should tell you the game version and below that you will see "Uncensored Edition"

Any advice or constructive criticism is welcome, Please thumb up if this was able to help you out!
Also, shoot me a request if you play similar games, still a bit new to steam and my friends list is a bit dry =)