We've just pointed out that raising your affection and corruption points by cheating is a fucking damn bad idea - explaining why - a few posts above yours.
Anyway, selling your cum is not a good idea. Best way: give Penny cumwine.
Did you even read what I wrote or you yourself wrote for that matter?
Raising the affection/corruption of the NPC's will mess stuff up since this is tied to a lot of important checks and progress. However raising or lowering the corruption of the MC is something completely different. (Last I checked or remember there isn't even an option for this in the cheatbook)
First of the MC's corruption will mostly lock you out of certain parts but far as I know it's nothing game breaking. You are able to in a legit way able to get 99 cum filled bottles which you can then sell to get +99 corruption. This is not cheating and doable in game however with the cheat book you can add the 99 items instead of having to jerk off 99 times in game. This does not break the game in anyway from my knowledge.
However raising an NPC's affection to for instance 20 might break the game since usually the NPC can only go to for instance 6 affection in the legit way then you need to do something that usually opens a new action to raise affection to 14 and so on. By raising it to 20 instantly you've probably skipped 2-3 triggers which will mess up the game. In other games this can usually be remedied by using a save editor to manually enable the triggers but in this case the normal save editor used for this doesn't work for some reason I don't know.
So as mentioned over and over DO NOT touch the aff/cor options in the cheat book for NPC's and instead use it for money/xp/items.
This comes back to my tip which is to use the cheatbook to add "items" to then use the ingame legit way to increase the MC's corruption.
On a side note the cum filled bottles are what you use to spike her beer if I remember right anyway so cheating in cum filled bottles will help you anyway in corrupting both the MC and Penny.