Alice sits on the floor rather than a nearby chair.
Sitting on chairs is impossible (like in most RPG Maker games).
The camera is pointing at the chair, and Alice can't be seen if she doesn't sit there.
The producer picked up a furniture catalog, decided that there must be something to this whole "sitting on chairs" thing if so many people are doing it, and ordered the writers to have Alice sit in a chair.
Alice sits on a chair and decides the seat is too rigid for comfort. Alice chooses another chair but sinks too far into the cushion. Alice picks yet another chair that seems to be optimal. Third Time's The Charm — until the chair collapses under her inside of 30 seconds. This leads to discussions of Unfortunate Implications where Alice feels she needs to knock off 20 pounds (when she's already a size 2), and how chairs are shoddily manufactured nowadays.
Basic Trope: Something inconsequential that happens all the time is called a trope.
Straight: Alice suggests "People Watch TV" as a trope.
Conversed: "I thought the essay would be an interesting analysis of the show, but I think the author was just ignorant of the culture the author was writing in — none of the stuff it called 'radical' actually was."
Deconstructed: Alice writes up a YKTTW for "People Watch TV" and leaves TV Tropes for a while. When she returns, she is shocked to discover that all of the responses to her post were flames by tropers fed up with a recent trend of People Sit on Chairs-type tropes popping up on YKTTW.
Reconstructed: Alice writes up an article for "People Watch TV," but upon realizing that it is meaningless, she puts a lot of effort into making the tone of the article match up to TV Tropes' casual, wry, snarky style, while still describing the "trope" well. The trope is indeed meaningless, but the article is so well-written and humorous that it gets launched anyways as a Just for Fun page.
Played For Laughs: "I need to come up with an extremely important, prominent, Older Than Dirt trope that no other troper has ever realized before!" *Smash Cut to Alice writing "People Watch TV"*
Played For Drama: A legion of tropers whose People Sit on Chairs-type YKTTW posts were discarded finally stand up for themselves after all this time. They lanch a hostile overthrow of TV Tropes 'government', cutlist all the Tropes of Legend, and replace them all with tropes such as "Most Birds Can Fly" and "People Pay For Things With Money".