A JoF - A JoF is like a Jif, but longer, like a whole run around the

A JoF is like a Jif, but longer, like a whole run around the block, and it feels like forever.

Text: I did a JoF for 26 minutes, my hand was numb

Tweet: A JoF is like running a marathon with your brain

DM: I did a JoF during my lunch break and missed my bus