a man's got to do what a man's got to do

A strong, virtuous person must do what they feels needs to be done, even if it is dangerous or undesirable. Sometimes said ironically. It might be dangerous delivering water to the refugees, but a man's got to do what a man's got to do. I know it's a lot of cotton candy to eat, but a man's got to do what a man's got to do. You need me to just hang out at the pool all day and stay out of your way? Well, a man's got to do what a man's got to do!