ObMath: The mean age of the guys should equal the mean age of the girls. And other mean stuff going on.

The dialogue for this comic was originally wordier, trying to get it where it needed to go (and even included, sort of, a reference to the above fact, giving their relative ages). Judy and Chuck have been together almost as long as Ken and Michele (possibly longer, but I'm only going by first mentions).

Stranger fact: even though Chuck has been mentioned a few times, I don't think he's appeared since comic #321 on the Fourth of July in 2009. NINE YEARS! He was supposed to be shown at the wedding, but I simplified that strip as much as I could, so none of the +1's were shown.