Slight necro on top a the pile of necros, but one time I was in a book burn alliance in Crawler's Nest. I can't remember what pissed me off, probably something stupid I did, but I went @#%#@$!#@$% in place of a swear word. Basically I was sufficiently annoyed that I didn't want to take the time to choose a swear word, so I went Q*bert mode instead. (Explanation for millenials: it was common in mid-to-late 20th-century comic strips as generic profanity.)
It confused the hell out of a JP who had never seen that before.
Oh yeah, there was one other interesting JP moment I had. The first time I made the run to Jeuno, I had joined up with someone and said "Runny-wunny!" Then I realized the other person was a JP and said "Hashiritaru!" Yeah, dat smooth taru-ness in two languages.