FUCKrying out loud

What you say when you accidently let the f-word slip in the presence of people who you don't want to swear in front of.

Mum: "Rod, we are cutting your allowence"
Rod: "FUCKrying out loud..."

or

Teacher: "Rod, you failed the last maths test"
Rod: "FUCKrying out loud... I tried really hard on that one."