This phrase expresses your passive acceptance of an event,
initiative or activity that may or may not require your
involvement. A more creative, flavourful and eyebrow-raising way to say "it doesn't bother me", "meh" or "
I don't care".
"
If you want to spend
the night in jail, fine, it's no jizz on my chin."
"I'm driving by there anyway, so it's no jizz on my chin to swing by and pick you up."
"Hey, it's no jizz on my chin
if you want to visit that priest, but don't say I didn't warn you."