It ' s mid yawn , probably stressed out from sitting on a strangers lap . Not happy <| sep |> Half joke , half serious . <| sep |> They ' re not very good so they didn ' t sell very many . Just buy the gas version . <| sep |> When the doctor didn ' t put enough numbing medicine in my foot before shoving a scalpel in it . <| sep |> I agree with usocphd it sounds like Pierre Bourdieu . He doesn ' t necessarily argue that body language determines class , but that class can be definedreproduced through things like body language , accents , etc small nitpick , sorry ! . Check out his definitions of the terms ' habitus ' and ' social capital ' they sound like the things you ' re hinting at . Maybe start with Bourdieu ' s The Forms of Capital 1989 , I think ? Good luck !