23 characters on each line... thats not too difficult... u might have ty shorten a classic quote to get it to fit though....Which character do you want the quote to be from?
If you want marshall you could used something like "(line 1)I lost my keys... (line 2)Where are they?" or "they're supa-swank"
for Syd you could use "(line 1)Write this down,EMETIB (line2)Now reverse it"
Jack... "What's a spork?"
I cant really think of anymore right now... but I'll think about it and add somemore later!