How do you illustrate silence?

In December 2001, Marvel experimented with the "'Nuff Said" event, in which comic books featured little to no dialogue. The results received some criticism, although I enjoyed Grant Morrison and Frank Quitely's New X-Men #121, which revealed the origin of Professor X's sister. So, how did the cover artists try to get the silent concept across?

Well, some went the obvious route:







Some tried something a little more subtle:



Some illustrated the exact opposite:



And some pretended it wasn't happening:



But the cover of Peter Parker: Spiderman # 38 was definitely my favorite:



Covers found here, here, and here.