The example picture for [smiley face](/tags/smiley+face) was taken down.
One of these might do for a replacement:
>>1117555t >>1196765t
Alternately, >>1115695, because there's no character that's smiling and thus no way to mistake what it's showing; but even though it's rated `safe`, I wouldn't *really* suggest it be chosen as the example because it's a bit creepy.