Forum reserved for discussing specific points of the story—mostly from the manga. Be warned, these discussions will be current with the manga and will spoil many plot lines for anime-centric fans.
[credits to the owner of the picture and to headstrongshihoclips at YouTube
Basically, this is what's happening in this scene. The detective Boys and a few select other people are in this movie theater that is about to get shut down, due to the rumors spreading about the place.
Everyone there is setup to watch a Gomera movie marathon. (Seems the only movie these kids go to see are Gomera movies.) They are sitting through the second movie when Ayumi falls asleep. Conan now has the need to use the restroom. He whispers for Ai to switch places, as not to disturb Ayumi, but suddenly Ai's head falls on his other shoulder. Thus, trapping him in place.
Conan does not consider his fortunate moment here, only thinking about how to get to the restroom.
You can check and find that Gosho places Conan between them frequently when they are positioned in a row, such as sitting in Dr. Agasa's car in the static electricity case and when they were sleeping on the single bed in the case where Conan's (Shinichi's) mother took them to see the premiere of a Kamen Yaiba movie.
Because Gosho wants to make it easier to make running gags about Ayumi liking Conan, and to keep making ambiguous moments between Conan and Haibara.
P.S. first reply after registering an account here, I'm remember it.
It's nice to be important, but it's more important to be nice.
Look into a mirror before judging others.
Life is not fair; acknowledge it, accept it, deal with it.
There is always and motivations behind harming and killing, but no reason is needed to save or help another.
Death is only a new beginning.
You receive after you give.
Materialism is an endless vortex of evil.
"staying by his side (full power)"
HiddenDetective wrote:
Because Gosho wants to make it easier to make running gags about Ayumi liking Conan, and to keep making ambiguous moments between Conan and Haibara.
LOL that is so true!!
Because of this positioning, there are frequent "Haibara teasing Conan" scenes
it makes it really cute and funny ^^