Drunk calls are irritating both to the other person and your drunk head next morning. There’s this option on Android devices running M or above to randomize the pass code values. Looks something like this :
My idea is this if the numbers are jumbled, you’d at least think twice before entering your pass code. To make this even better, I have the same thing running for sensitive apps ( whatsapp, snapchat, Instagram etc) through applock, an android app. It does exactly the same thing, but after you’ve entered your phone’s pass code. Think of it as a two wall system.