We went to see that movie (no kids, just with friends) when Toy Story was still early in the first theater run... people were packing the theater.
Theres a moment in the story when "andy" (the little boy) is about to leave for to go to the "Pizza Planet" and he runs to his room to grab the "one toy" he's allowed to bring... Now the plot line is that the Older Fav toy (woody) is jealous of the new "Fav Toy" (buzz lightlyear) and so Woody messes with Buzz and Buzz is nowhere to be seen when Andy comes in the room...
Andy cries out "Mom....? I can't find my buzz!"
me: Bursts out laughing in the theater... other than me, the theater is dead silent. :D