When you mess up and say fuck in church or in front of your grandparents, or during a school presentation. Resulting in stares and snickers from your audience and a firm wag of the finger from your superiors.
Guy: Today were going to learn about... uh fuck I forgot?
Audience: (stares in awe) Why would you say such a terrible thing?
Theacher: Think of the children, DIPSHIT!
Student: He fucked and Dropped a Herbie he's in deep shit now!