I will walk up to asian girls with a knife in one hand and my dick in the other, and threaten to cut off my dick if they don't sleep with me.
This sounds like a bad idea my friend.
I cannot get laid, I'm being honest here. The girls always say no and that's the problem.
Saying you will cut off your genitalia if a random girl does not sleep with you is not smart. You may find yourself not having your genitalia anymore by the end of the day. Please reconsider going through with a stunt like this.