How would you react if your gf asked you to display your penis in her living room as a decorative object

Throwaway because I don't want my followers to see this. <br><br>So my gf and I have been living in a 1 bed apartment for about 8 months now. We have been together for 3 years and planning to marry within the next 2. She never had a problem about anything. From this day onward she has been making weird demands. She said she wants to display my penis in her living room as a decorative object. I was flabbergasted. She first asked to paint it and put it in display case. I was like you want to castrate me right? What the hell is that?? I told her I am flattered to think that way but no. She got mad at me for rejecting her stupid request. The request was not stupid she was stupid. I said fine let's paint it but it won't fit in your display case. She said she wanted to make it smaller by cutting it off and I was like wtf is wrong with you lady. You want to castrate me? I think she is not mentally sound anymore. She has been acting very strangely lately. Even the other day she demanded that I impregnate her backyard so that kids can play with them. I don't know if I can tolerate these anymore