I didn’t need to do this but I did and now I want it in my comment history:

class Suckable {
    bool unsucked;

public:
    Suckable () {
        unsucked = true;
    }

    void Suck() {
        unsucked = false;
    }

    void CheckAndSuck() {
        if (unsucked) {
            Suck();
        }
    }
};

Sorry for making you see c++, it’s the language I’m currently using. This program compiles on my machine and doesn’t use global variables.