1. Jay-ran: Jay=imbecile. Ran=quick movement, similar to run
2. To ran across a street illegally or stupidly, like an idiot.
3. Proper British term: Jayrun. However, we are American. Proper American term: Jayran.
(After receiving a $75 ticket.) Hello officer. I swear we weren't jaywalking. We were jayranning! You can't give us a ticket for that because jayranning isn't illegal!