Just Kidding For Formality, But Not Really. Used under many circumstances, JKFFBNR has a variety of applications. In the event that one types something incriminating, offensive, embarrassing, or overwhelming to the reader but is actually somewhat true, a simple "JK" may not hit the spot. That's where the JKFFBNR pops in.

It’s an acronym standing for Can’t Remember A Fucking Thing. It’s usually used to describe embarrassment at being unable to remember someone (CRAFT moment); going onstage as the lead in the latest theatrical performance and your mind goes completely blank (CRAFT situation); the next morning after a night when you got pissed as a fart and woke up in bed cuddling a traffic cone and a string of fairy lights wound round your prick.